Category: Sci/Tech

Learning the Recorder (by )

I'm relearning stuff at the moment due to the old whack on the head - so this mainly means I am colouring in but the girls want to learn the recorder and I have a hang up about the recorder...

Anyway to cut a long story short there is a Frozen recorder book on it's way to us and we have received a rather disappointing Elsa/Frozen "recorder" which is a crap plastic all in one moulded toy that is pretty useless but Mary loves it and it was stupid cheap so hey you get what you pay for (I was still narked if it says recorder - I expect an actual recorder!).

With panic I realised the book would probably be all music notation even though it says easy on it. I can't read music, I have a stab at learning it every few years but nope doesn't work. I normally just work things out by sound etc... this is actually what got me chucked out of my recorder class in school.

Apparently according to the then music teacher you can't be a musician without reading music. You can't play music. This crushed me. What had happened was that she hadn't noticed I couldn't read music, I was watching her and the other kids and working it out by ear and progressing nicely. Even when they started setting homeworks it wasn't too bad as it was nursery rhymes and I just worked them out but then... then they wanted us to do "proper music" story pieces as backing for singers or as part of the orchester. I did not know these songs, my parents were not into classical music - BAM a glass ceiling.

They were complex with different sized recorders - everyone else would turn up knowing the piece, after three weeks of this I knew that something had to happen for me to continue with recorder. So I asked my mum if I could have extra music lessons, she said yes and wrote a letter explaining the situation and that I could not actually read the music - could I have extra lessons (paid for) or did they know who to ask etc... to sort this out.

The letter was the death nell - in front of the enter wind section I was castigated - told that if I hadn't picked up reading music by now then there was no hope - I simply could not be a musician.

I left angry, and confused and crying, a hot mist of shame clouding my vision. I clutched my two recorders, one of which was basically shiny knew and the classic dark brown and cream, my nan had bought it for me as I'd moved up a group.

Being me I became kind of resigned and militant about this. I didn't really want to be playing the recorder anyway - I wanted to play the flute. Being a glutton for punishment I went along to the flute try outs. From my prospective it seemed to be going quiet well, I could get a sound out of the damn thing unlike the others in the room. But then the teacher took the flutist aside and hard the mutterings about not being able to read music, or writing for that matter and so on - I would like to add that I was also not the only child in the room at this point but I think the teacher had forgotten I could now hear properly as it was just after the second lot of grommets had been put in.

I doubt my pitch was perfect (I'm pretty sure it wasn't), I don't do sound as just a hearing thing anyway, I like to feel it, if I can't feel it I can't know if it will fit properly.

Anyway they came over to me and I looked up, "I'm afraid your arms are too short for the flute," he said.

"What about the picalo?" I asked - I was desperate to play the flute - this was because a blue telepathic animated character out of a cartoon series called Ulysses 31 played an epic flute made of gold and lights that she vanquished monsters with. Also I had curly hair - somehow I felt that meant I was destined for the flute.

He hesitated, "you have to learn the flute first before the picalo." He said gravely and I left the music room once more with the angry confused mist of shame and tears and snot.

My mother was furious but we could not afford flute stuff outside of the special schools programme.

Then because you know I never know when to quit I went for the choir in the final year of juniors with the same woman. But I was sick on the day the auditions were supposed to happen. When I got back there were four people out of the entire year who were too bad to go in the choir - they were the people I had extra reading lessons with in the special room.

I am a shy person. I was still determined, I was made to stand in the school hall in front of the entire year and given a piece of sheet music that the teacher knew I could not read. I didn't even know what the song was going to be. I was petrified, everyone knew I wanted to be an opera singer (it was down as part of my three fold dream which involved being a spaceman and archeologist so I could look at rocks - I thought as an opera singing I would get to design the costumes, write the stories and build the sets as well as doing singing, dancing and acting).

I recognised the song, I tried to sing, my voice stuck but then it unstuck and I started to sing.

The teacher loomed in putting her ear right in front of my mouth making comments. But I wanted to be in the choir so much I kept going.

She stopped the music, and announced I was in tune but too quiet and there was no place in the choir for people who couldn't pull their weight. Everyone knew how much I wanted to be in the choir. I don't know if I imagined it but at this point I was sure they were all laughing at me. My form tutor came and rescued me and sat on the stairs with me whilst I cried.

"Hey we can't all be good at everything, what if I told you you hadn't gotten onto the football team? You wouldn't be crying then would you?" we both knew I would never have gone for it as I was still learning to run without falling over at this point.

"I would." I said and she looked at me sitting there in her sports outfit she never took off - she knew me and sports, "if I'd tried out for the football team it would be because I wanted to play football so of course I'd be upset if I didn't get it especially if I was then told I was rubbish and would never be able to do it, in front of EVERYBODY."

She smiled and laughed, "Sarah you are amazing, you'll find away, it will be your own way, now come and see the stuff I've got planned for you lot, you're going to be so glad you aren't in the choir."

And I was - we made things and explored things, including creating our own papier mache puppets and sets. I am also still friends with two of the people who were in that group with me.

Of course I also then went and joined lots of choirs, and learnt the guitar and have sundry instruments in my house. Now I know I am not brilliant at music and I know I panic when ever technical stuff is mentioned but I love music.

These events did mar music for me though and looking at it now from where I am as an adult I feel that, that music teacher was most definately in the wrong. She was also my second year class teacher so I would have been 8? She was my least favourite of the junior school. I did revisit the school once before my work experience (which was in the infant school anyway), I made a special trip to her classroom to tell her how I'd been excepted into the choral society as well as having performed in a local performance of Joseph and his Dream Coat and so on - what I didn't mention was that I still wasn't having any school music or drama classes as I was still having to go to a special room to learn to read and write properly - I did however mention that I had been given a solo without being able to read music. I am glad I didn't know the term passive aggression as I would not have done this and I feel that in all honesty it needed to be done.

So back to the here and now as I am sure I've blogged about this story a couple of times before!

I have a recorder that I play merrily we row along to get children to sit down at readings and workshops. It turns out to be the only song I can remember since hitting my head though Jean says I could play lots of hymns (makes sense they are songs I would have known well enough from church to work out by ear).

Anyway she doesn't get recorder lessons at the school - she's had a bit of uke but they are not a big school and the teacher who could play, left... so I taught her merrily we row along. It took her about half an hour to master and remember and now she is playing it CONTINOUSLY!

Then I was struck by the panic - she was asking for other tunes and I can't remember any and I don't think I was particularly good anyway. That and the realisation that the book though saying EASY recorder would no doubt expect music reading skills... I turned to youtube.

I found this vid of Happy Birthday.

My dad was coming down the next day - it was his birthday - it took me 15 mins to get it down pat and I then remembered it in the morning for the kids to sing along to.

I was so proud of myself.

Jean is keen to learn and Mary has always loved the recorder 🙂

(She is now 4 and not the little thing in this video!)

The first thing that happened was my mum mentioned the teacher and we both had the same thought, if I can teach myself using youtube videos whilst suffering with the tail end of a head injury then how the hell did a qualified teacher stuff it up?

I realise I was a "special needs" kid but still... also there were like over 60 kids in my year - that is a 60 strong choir that was not a super duper choir so would 5 "bad voices" have made that much of a difference espcially if they were far away from the mics? And was it coincidence that we were all the "special needs" kids? I'd never thought on that connection before but it is there.

Anyway - I think I need to rest and then learn another song... well actually I am also setting up a section on here of educational stuff so Jean can find it when she wants to learn without me. It should also be useful to others and I may include links to good education workshop leaders etc... not really decided yet.

One last thing - it turns out I know random stuff about the recorder and sizes and stuff and got very defensive when Alaric suggested that only kids play them and that you never see adults playing them!

10 Years Ago…. (by )

Ten years ago today Alaric got to the train station and thought "you know what I don't want to go to work today, my pregnant wife is very sick and in that hospital just there, I'll go and see her instead". This was an unusual thought for him, as it was he mostly worked from home and only went in once a week for meetings.

It was bizar behaviour on his part but something I am so glad he did. He held my hand as I sat on machines that monitored my vitals and then he went to get my breakfast. I think I fell asleep, something was going on, nurses were running past the door, Alaric came and with a nurse helped get me to the breakfast room with it's TV.

He explained a bomb had gone off, we watched the news as it unfolded with a sickening sense of relief, Alaric could have, should have been on that train. Then the panic as we realised that it wasn't one attack but several - that it was hitting routes we knew. I tried to phone my friends and family who worked in London. Unsurprisingly the networks were jammed - in hindsight we should have been leaving the phones for emergency stuff but we weren't thinking we just wanted to check everyone was safe.

Our Drs started to disappear as they left to help or be medical stand by, my parents turned up thinking they were going to have to tell their very ill very pregnant daughter that her husband was missing on one of the blown up routes. They had been trying to phone him, none of the phones were working.

They were angry with him in that way you get angry when a child didn't come when you called, and you imagine the worst. Then he got hugged. And then the maternity ward began to break down. They say there is no stress induced pregnancy but woman after woman came in with blood pressure problems or in labour or both. The ward filled, there were women on trollies in the corridor - we were not on the labour ward but one woman ended up in the advance stages of having her baby in the maternity ward with me. They pulled the curtains round her bed, she was calling for her husband - her parents didn't know where he was, he had not done an Alaric, he was either dead, injuried or stranded in a motionaless London.

There was not enough beds or staff and bloody foot prints appeared and stayed on the floor. I was bewildered.

After much trying we got hold of as many friends and family as we could, checking they were all ok. More than one had had a near miss, were sitting still in London, sitting on steps crying or telling me how eeri it was with all the traffic stopped, with the hush, and with everyone being kind. London is normally a free for all, pushing, rushing, ignoring the press of humanity but that wasn't what was happening. Everyone was milling, quiet and in shock, everyone knew they were the lucky ones.

Everyone had been expecting the attack since 7/11 in the US, in truth London commuters had been being a bit nicer to each other since that point all fearing that this day was coming. If your train was delayed by more than ten minutes and you had no reception but someone else did - they would lend you their phone to phone and say you were alive. This affect multiplied on the day, I did not really register the stories at the time - I was too ill and mainly wanted to know that the people I cared about were fine.

That is not saying that I had no feelings for those who weren't, it was horrific but I needed to know my friends were fine.

When he got home Alaric found we'd been added to shout outs, it was before the days of social media but we did have blogs and mailing lists and everyone was checking that we were ok. People were worried.

My friends and family were lucky, but mum's friend son - not so much. He's alive due to the carriage he got in but bar the shock of the actual explosion and minor injuries he then had to be escorted past the carnage. Last I heard he still hadn't gone back to work, not all the scars were physical ones, not all of them could heal.

Much later on I realised that it had been even more of a close call for our little family, if I had not been ill and in hospital then we could all have been on the train. It's a strange twist of fate and one that wedges inside me, that me almost dying potentially saved all three of our lives. I say potentially because we might have been late or delayed or I might have weed myself on the way to the station or a million other things, but all of those things are nothing but grace as was me being so ill Alaric felt justified in not going to work that morning.

Terrorism is a horrendous thing, life taking for political gain, for power, religion, to make a point, to drive the wedge... murder is the only name for it.

It was muslims that time but it followed a tradition of London bombs. Someone asked me how I could still travel on the tube into London - the answer, "The RIA didn't stop us, oil disputes in the 70's did not stop my mother, hell she even had her bank hijacked, so why let this lot?". They weren't all muslims like the RIA were not all the Irish, the point of the bombings was to divide, to make an us and them, sadly with some people they succeeded and that is sad. Muslims were killed on the trains and buses, muslim doctors came and aided people straight away - before anyone really knew what they were dealing with, weather those drs were putting their own lives at risk or not.

Terrorists don't really care who they kill, who they injure or maim, that's kind of the point of the bombs. Ever wondered why we don't have metal bins anymore?

Anyway that is all besides the point. Today there are people remembering loved ones who should but aren't still here and no amount of photos shown on international TV is going to heal the wholes in those families. Later today I am going to light ten candles - one for each year, for the yawning chasm of pain, for those who were lost and those that still bare the scars.

DNS issues today (by )

Gah! This morning, my alerting system texted me to say that love (the primary server) can't talk to ihibehu (the backup server in the USA). A quick looked confirmed that we seemed to have some kind of routing loop in level3's network, which was therefore returning "TTL exceeded" to pings. I could connect to ihibehu OK from another network, confirming that it was just a local routing spat of some kind. I shrugged and moved on with life.

However, people started complaining they couldn't resolve DNS for stuff I host, so I had another look. love and ihibehu are both DNS servers (they go by the name of ns0.warhead.org.uk and ns1.warhead.org.uk in that role), and if one is unreachable, then the other should be contacted, so all should have been fine. However, it turned out that the IP address for ns0.warhead.org.uk was still pointing to its old location (and love don't live there anymore), so ns0.warhead.org.uk wasn't "working"; and so for the people whose route to ihibehu went via the routing problem, ns1.warhead.org.uk wasn't working as well.

Oops! One tricky aspect of distributed fault-tolerant systems is that sometimes part of them fails and you don't realise because all the user-visible stuff silently fails over. Therefore, you need to test things below the failover layer to make sure they work individually. Although I check both DNS servers are up, I wasn't checking that the "glue records" mapping the nameserver names to IPs pointed to the right place...

But I clearly remembered sending in the request to the registrar to change the glue record for ns0.warhead.org.uk when I moved it, didn't I? I checked my emails and, yes, I'd send that request, but with all the other stuff I was dealing with in the migration, I never chased it up. And lo, nestled among my spam emails was a response from the registrar, reminding me that I still had access to the interface to do it myself (The registrar used to be me, but I passed that mantle on to somebody else), and suggesting I do so. So it had never gotten done.

"No time like the present, then," I thought, and set out to send in the request, only to find that I don't still have access to the interface, because it also needs a password which I removed from my password databases when I passed control of the registry interface over. Doh!

So I've re-requested that the registrar does it for me. Thankfully, the routing loop has healed up and all is working again while I wait for that to happen. And I'm going to write a test for my glue records being correct into my monitoring system, because that was just sloppy!

Ugarit 2.0 released (by )

Unless I messed up the release process, Ugarit version 2.0 is now available from the Chicken Scheme egg repository.

What does this mean to you, dear reader? Not a huge amount; you can go and read the release notes at the bottom of the Ugarit documentation page for the fine detail. But, to summarise:

  • The beginnings of archival mode! As well as storing chains of snapshots of a filesystem, as Ugarit has always done (generally to be used as a versioned backup system), Ugarit vaults can now also store "archives", which are groups of files or directory trees identified by arbitary metadata, such as "This is the song 'Ooofarno' by 'Bobby and the Beaters', which is track 11 out of 12 from the 'Fishes In The Sea' album", or "This is a photo of Aunt Mavis taken at 13:58 on the 3rd of August, 2020, at Uncle Bob's 100th birthday party", or "This is a PDF of a paper by Donald Knuth on ternary numbers, called 'Simplified Arithmetic in Base Three'". You can then find things by searching on this metadata, which is much, much, nicer than creating trees of directories to organise all your stuff into. The user interface for getting things in and out of archives is still a bit minimal - but I have plans to fix that.

  • The way tags are stored has changed. Ugarit 2.0 will read vaults created by prior versions happily, but when it writes to a vault, it'll write new-format tags (which have type information as well as a pointer to something), which old versions of Ugarit won't be very pleased to find.

  • We now store a "metadata block" in every vault, pointed to by a hidden tag (we didn't used to be able to hide tags, so old versions of Ugarit will show you a funny tag, and complain if you try and do anything with it, as it's a new-format tag). This stores a vault format version number, so we can better handle incompatible changes to the vault format going forward; and as it's hashed and encrypted like any other block, it means you'll get an instant error if you try and connect to a vault using the wrong hashing and encryption settings, rather than bizarre errors further down the line.

  • We've made it possible to store large logs in the vault. When we do a snapshot or an archive import or something, we keep a log of warnings and recoverable errors that cropped up while doing so. This is stored as a file attached directly to the snapshot or import object, so it can be arbitrarily large.

  • Added log.sexpr and properties.sexpr files in the explore-mode interface, inside every snapshot or archive import object, which let you access the log and the metadata. These are files you can extract, or you can look at them with the new cat command.

  • Added a cat command in the explore-mode user interface to dump a file to the screen for viewing.

  • Added a client-side cache of snapshots and imports, which significantly speeds up the exploration of backup histories and archive metadata. Optionally, you can make the cache persist between sessions, otherwise it's made afresh for every explore session.

  • As well as the existing ability to fork a tag into two tags that share the same history (applicable both to snapshot tags and archive tags), added the ability to merge two tags into one, melding the two histories into one. This includes some exciting logic to combine those histories for display in explore mode!

  • Added a new sqlite backend, which provides a storage inside a single file, managed by sqlite. I wrote it to make testing easier, but it's a useful storage backend in its own right!

  • Tidied up the Ugarit internals, splitting the core up into a load of separate modules. This makes development easier for me, and means nothing to users.

So what's next? I want to improve the usability of archive mode - right now, it's quite easy to import a bunch of files, but you have to hand-edit a text file to provide metadata beyond what it can automatically extract (currently just basic file information, plus whatever it can extract from ID3 tags and Ogg metadata); and then you can explore the history of the archive (as a series of imports) through the explore interface, or use a command-line tool to search for files, and then extract them or stream them to standard output.

What I want is:

  • A shiny (web-based?) UI for searching the archive, seeing thumbnails of images, and the ability to download files with a single click or to perform bulk editing operations on metadata with ease and panache.

  • A music player, that lets me pick music from an archive to queue, or to be given an arbitrary search criteria to find music to random-play, playing direct from the archive.

  • A way to pick photos and assemble them into galleries, which are then publicly visible through a Web interface. Sarah wants to be able to put sequences of photos together, as well as individual photos that don't form parts of sequences, into multiple albums, for her blog publishing stuff (which is often quite image-heavy). The current image publishing framework I threw together for her years ago is a bit limiting now, and quite clunky to use.

  • A mountable filesystem that lets me access archives, either in a generic manner (with auto-generated directories for every property, and every value of that property, containing all files with that value of that property) or with customised directory layouts (such as presenting my music collection as /music/ARTIST/ALBUM/NUMBER:TITLE.EXTENSION, with all the capitalised bits generated from the metadata). I'd like to do this by adding this to the explore mode virtual filesystem, and then having that mountable.

Geo Bake Off – Geologist Despair (by )

Sisters and their epic geo-cake

I mentioned the Geological Society's Bake Off to Jean - this is the result - she's been planning it for weeks!

cake top view complete with zome in sections

The girls are seriously proud of this 7 cake monstrocity.

Cakes all bakes for the geo bake off

They have certainly enjoyed eating it 🙂

Mary eating geology cake

Jean eating geology cake

There is a lot of hidden stuff that went into this cake.

One of the themes was mud which is why there is chocolate orange mud flows 🙂

The chocolate mud flow on volcano cake adding chocolate mud flows to volc cake

But there were all sorts of challenges and Jeany decided she wanted to try and complete as many as possible.

So within the river valley there is structure for a cross section.

The river valley complete with internal cross section

And then she just got plan creative - with the structure of the cake and I believe some youtube research.

Within are the mazi-bones

These are the marzi-bones fossil human ancestors or related species buried in a cash by volcanic ash - they may or may not have already been dead when this happened some more excavation will have to occur to find out!

What's within the mud close up cake

The top layer of the Mud Tower is a chocolate gravel lens between a sandy mud and a volcanic ash.

chocolate gravel lense between the sandy mud stone and volc ash

You can see the colour difference really well in this photo.

Mud tower with slice talen out

Here is Jean cutting open mud tower to reveal whats within.

Jean cutting into the mud tower cake

Spoiler... the chocolate gravel lense.

chocolate gravel bed hidden between two layers of cake mix

Here's the river valley with birds foot delta - at this stage the volcano is dormant or extinct.

River valley cake close up

This is the main part of the cake with Mud Tower and the ammonite loaf as zoomed in bits and the past hidden behind the lush "hill".

cake top view complete with zome in sections

Of course there is a hidden volcano and... erm Jurassic Park toilet death scene...

icing lava and Jurassic Park toilet death scene with t-rex

Making the dude out of icing

The geologist hammer was another challenge - but being Jean it is a geo-thor hammer so is the wrong shape (to be honest she sneaked a time travel train into it so I was amazed there was no tardis). I did the writing.

Geo-Thor hammer made of icing

Within there is an ammonite - this one was completely and utterly Jean's own idea and it worked and she is soooo happy she is taking it into school tomorrow 🙂

The ammonite within cake loaf

This was the tense moment of cutting in and finding out if the idea had worked. It's a bit flatter than intended but we agreed it's had metamorphic stuff happen to it thanks to the volcanos proximity.

Jean cutting her hidden fossil cake

The cake did kind of over flow but that's not surprising - here's how it was made...

bottom layer of cake mix for hidden fossile cake swiss roll ammonite in you go ammonite loaf ready to bake hidden amaonite cake splurged

icing hammer before writing Jean's hidden fossil load with icing hammer

Did I mention that she called this cake collective - Geologist Despair.

Geologist Despair Cake

Geologist Despair the cake that rocks

Volcano before lava.

volcano cake before lava

She did try to put structure inside the volcano but it didn't work that well.

Strips within the voclano cake didn't really work Inturnal structure of the voclano cake

The volcano was fun to put together - she remembered Dino-Mountian I'd made her for her 5th? Birthday 🙂

Marshmallow fluff cake glue Filling the volcano cake with chocolate frosting

How the river valley was put together...

creating the internal structure for a hopeful cross section valley cake four types of rock ready to bake! River valley cake with ash and mud inclinded layers chocolate butter icing from different angle chocolate orange butter icing for mud base grass for the hills added to the river valley cake River valley cake with birds foot delta

One time travel train and it's in a tunnel - the tunnel was the challenge 🙂

Time travel train coming out of icing tunnel between the two time zones of voclano cake

And before the tunnel, infact she did a lot of icing moderling for this.

Train added to cake sans tunnel making lava moulding the icing decorations for the cake

Of course Mary pulled her weight too 🙂 Mainly with rolling out icing and smearing chocolate everywhere!

Mary rolling icing for the cake

She did most of the Mud Tower by herself 🙂

chocolate coating the geo-cake

Stack of cake Choclate flop Mary coating mud tower in chocolate Mary adding the chocolate gravel Cake stake chocolated Marzipan tree Mud crack cake

Mary put chocolate gravel leaking out of an erroded side and some other bits including sticking out marzi-bones 🙂

Mud tower with grit and boulders and bubbles and cracks

Mud cracks were a challenge - Jean went with the existing cake cracks and made the lonely tree which was another of the challenges.

Look at those mud cracks and the lonely tree cake

Lonely tree... did I mention the lonely tree?

Lonely mazipan tree

Other general cakey making pics...

Jean and Mary sorting cake tins for geo bake off Alaric and Jean sieving flour Jean putting cake battery into bee hive tin to make a volcano cake adding the chocolate fragments mixer hard at work food colouring and choc powder for different types of mud

Creating the Marzi-Bones...

icing sugar in mould ready to make cake decs marzi bones are go agglomerate possibly glacial deposit created with chocolate and spongue cake Ring cake with chocolate inclusions etc Jean adding the bone cash to the cake Surprise marzipan remains can see the colours of the mud tower bottom cakes better and therefore the strucuter

maripan skull

I really love this idea 🙂

The marzi bones

Creating T-Rex...

mixing green and white icing for t-rex icing t-rex needs a trim

icing t-rex ready to go

This has been EPIC - it took 3 days to make the cakes - Alaric is taking Mud Tower into work tomorrow etc... Both girls have enjoyed it so much and of course we used home grown eggs. The cakes themselves range from chocolate orange to mint to vanilla and strawberry in flavour. There are three icings and marzipan involved and some of the cake is me friendly ie gluten free (the volcano) and some is Mary friendly and so on.

Jean was a little sad as she had meant to put Mary Anning in and a geological map too but she forgot and just don't ask her about how atomically correct her loo death scene is ok.

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