Come and Sing – The Creation

It’s been a while since I did any ‘proper’ singing, so I was both delighted at the thought of another “Come and Sing” day and nervous as to whether I’d be up to the task. This was yet again with The Bach Choir but the time the piece was The Creation by Haydn.

Before the day I did my usual preparation, making sure that I had the score and working through it. I was pleased to discover that there was no splitting the choir into eight (as those parts are always tricky) but less pleased with Haydn’s definition of an alto. Really, there are some notes that should be left to the sopranos, did he not read the memo? He also throws in some fairly tricky fugal sections with several different variants of the same phrase.

On the day I put my worries aside determined to just do my best. I picked a good seat with a clear view of the conductor (once again the wonderful David Hill) and a Bach Chorister next to me (arrive early for these things, it pays off). The vocal warm up was fun and a real work out for the brain as well as the voice in places.

Then we settled down to work through the piece. We rehearsed chorus by chorus. David picking apart things into tiny details in places, simple things like breathing early (so you don’t come in late) or working to get the sound smooth and flowing. It was wonderful to work on making it sound beautiful. I felt an incredible sense of focus, with no other thoughts than the music (a musical ‘deep hack mode’ if you like).

And then rehearsals over, we were ready to perform for our select audience who, sitting at the front, were the centre of attention. They even got a round of applause. Once we started singing though, I was focused on the music, the conductor and not fluffing too many bits. Without soloists, so doing only the choruses, the time rushed by. So much so that we were treated to an impromptu duet of the opening with Philip Scriven on the organ and David Hill on the piano. Then it was time for us to sing the last chorus and our day was over.

Well, almost over, as it turned out there was a chorus of ‘Happy Birthday’ to sing to David in celebration of his upcoming ‘big’ birthday. Then it really was time to go home.

Yet again, an amazing, enjoyable, educational day.


Wrapping Text With ImageMagick

I’ve already explained that I wanted to create an image slide for a slideshow from some information in a spreadsheet. I decided to use ImageMagick and, in particular, the Wand library for python to help me.

As with all theatre projects this one is collaborative. The original concept for this was James’ and he’d created some examples by hand*. Each slide has some fixed elements and then information specific to the event. Using those he’s created some template images that contain the fixed elements, there are a number of templates depending on the type of event.

Basic SlideEach one has basically the same layout and the same (wavy) line which delineates where I can draw the event elements onto the slide. Then I add the date and time and the title of the event and who is presenting it. All of that is straightforward with either a Caption, or a Text element.

Image AreaThe more challenging part is the lower half of the slide. The spreadsheet contains a link to an event specific image in Google Drive, so I download the image data directly. I want the image to fit into, at most, roughly half of the remaining area, so I resize it keeping the aspect ratio but capping the height and width.

with Image(blob=image_data) as img:
    size = "{}x{}".format(max_width, max_height)
    img_height = img.height # save height
    img_width = img.width # save width
    main_img.composite(img, left=left, top=top)

Slide With Image

Now I want to display the description wrapped around the slide. ImageMagick will easily draw all sorts of amazing text effects (on one line) but text wrapping is more of a challenge. You can use a Caption to wrap text inside a rectangle, but my rectangle now has a corner taken out of it. Also I was asked to truncate the text at a sensible point (e.g. the end of a sentence) if it was too big to fit.

This is the point for some funky arithmetic. Firstly create a Drawing and set the Font you want to use on it. Now text is either going to be next to the picture (a narrow line) or underneath it (a wide one), so using the font size and the height available, and of course the actual image height and width, calculate how many lines you can fit of each width. Now we just need to split the text into that many lines each of the right length.

The simplest way to split the text is to use the python textwrap module but that requires you to specify a fixed maximum number of characters and my font isn’t monospaced. Instead I use the Draw module’s get_font_metrics to do the same job. It requires a dummy image for some reason.

words = para.split(" ")
lines = []
with Image(height=10, width=10) as img:
  line = words.pop(0)
  for word in words:
    line_width = draw.get_font_metrics(img, 
      line + " " + word).text_width
    if line_width < max_width:
      line = line + " " + word
      line = word
  if line != "":
return lines

Using this I can build up a list of lines of text. Firstly the narrow ones and then the wide ones, discarding any text that won’t fit. Then I can draw them onto the image line by line. Giving me a finished slide.Complete Slide


*James is also responsible for the spreadsheet that holds all this data. You should ask him about it, it’s awesomely clever.

From Spreadsheet to Slideshow with a Raspberry Pi

As well as actually spending time playing in the theatre I also occasionally get involved in various computer related projects for one. This particular project was to help set up a rolling slideshow of “coming soon” events that we can display in the foyer of the theatre.

Of course this project lends itself to a raspberry pi so I got mine out and started work. Everybody (it seems) creates a slideshow on their raspberry pi, so there are many solutions to choose from. In this case (you’ll see why in a minute) I wanted a slideshow that looped through pictures in a directory and automatically coped with pictures being added and deleted. For now I’m using Eye of Gnome which does this admirably but this can easily be replaced in future.

So where are the pictures coming from? Well that’s where this gets interesting. The list of upcoming events is kept and managed in a Google Spreadsheet so I needed to take this information and turn it into a set of images for the slideshow. As the information in the spreadsheet is regularly updated I wanted to write a python script that could be run regularly by a cron job to pick up changes and create the new slideshow images.

Google provide an API to Google Drive that allows access to files and file information and they provide a python library to access this.
I followed the instructions here to configure a developers account and then grant access to the APIs you need (in this case Drive and Sheets). I decided to use the OAuth for Server to Server authentication to avoid the need for human interaction, so the other thing I needed to do was to make sure that the service account has access to the files it needs. I did this by sharing the relevant files and directories in Drive with the service account’s email address. I only needed to grant view access to the files as we’re only ever reading the data.

Then on the pi I needed to install a few libraries, the Google API of course, a date parsing module and Image Magick to help create the images.

sudo apt-get install python-pip
sudo pip install --upgrade google-api-python-client
sudo apt-get install python-dev
sudo pip install ciso8601
sudo apt-get install libmagickwand-dev
sudo pip install Wand

Once that’s done I could write the script to download the data. The Google API documentation is full of example code so it’s easy to get this working.
Firstly I retrieve the modified time of the spreadsheet, using the Drive API, to see if it’s changed since we last ran. If it has then I download the data from the spreadsheet and check each row to see if it’s been updated (each row has a unique identifier and a last updated time-stamp). For each updated row I delete any existing image and generate a new one.
Finally I record locally the most recently updated time of the rows so I know when to start from next time.

Note (because it surprised me) that the latest updated time of a row might actually be later than the modified time of the file as there’s sometimes a couple of minutes delay before the file modified time is updated.

That really was all there was to it. Well, okay, there’s actually a few other things going on too, but that’s for another post perhaps.




The Verse Of Sergeant Cadwallader

The Unexpected GuestSo tonight we open in Chesham with “The Unexpected Guest” by Agatha Christie.

I am playing a dreamy poetical Welsh police sergeant who is, naturally, investigating a mysterious murder. Aside from reading poetry (not the first time I’ve done that in a play recently) I am also caught writing it, but the audience is delivered no more than a couplet of this (fine?) poem.
I was given a challenge (by James of course) to finish the poem and I have done so in a way I think my character would have created it.

Of course, if you want to know who the murderer actually is…well you’ll have to see the show because I am certainly not going to tell you.

November Mists

Tis misty in November
But seldom in December,
The fogs that fill the valleys soon disperse.
After the mists of midnight
They fade away in sunlight
Only to be replaced with something worse.

The deeds of men inspected
Too dark to be reflected
Are revealed to us when the fog has gone.
We seek the true solution
To give people resolution
And let the injured parties lives move on.

© Sergeant Cadwallader (CMB)

Seaton Tramway And The Sea

Mystery trip out, getting up at silly o’clock in the morning, take my camera? Well yes, I’m always up for that.

So we went on an adventure (and a magical mystery tour) and ended up in Devon. I laughed when I saw were we were, because who doesn’t love trams. Even better this was a little tram line that runs down to the seaside (and back). You’ll see from the table below that we were determined to make good use of our day tickets.

Seaton Tramway

From Depart To Arrive Route
Colyton 12:30 Seaton 12:54
Seaton 14:00 Colyton 14:23
Colyton 14:50 Seaton 15:14
Seaton 17:00 Colyton 17:23


We also saw the sea (proof below), paddled in it, ate fish and chips and ice cream and had what was really a perfect day out by the seaside.Seaton Beach

Brussels Has Small Sights And Underground Trams

Brussels is a lovely city. It has beer, chocolate and lots to see. The first thing we saw (if you exclude the Atomium which we passed underneath of course) was Mini-Europe. This contains scale models of many famous sights in Europe, many of which I have seen (and usually photographed) the real one.

Brussels Tram MapIt also has trams. Some of those actually run underground, which was a real novelty for me. So here is the requisite list of tram journeys.


From Depart To Arrive Route
Heysel 16:10 De Wand 16:20 7
De Wand 16:21 Gare du Midi 16:27 3
Gare du Midi 17:20 Merode 17:53 81


From Depart To Arrive Route
Merode 17:47 Germoir 17:57 81


From Depart To Arrive Route
De Brouckère 11:05 Gare du Midi 11:12 4
De Brouckère 13:15 Port de Hal 13:25 4

Much to my surprise (some of) the trams are made by Bombadier.

Learning Language As A Game

duolingoSo sometimes my Twitter feed points me to something really interesting. Recently it pointed me to an application called Duolingo. It can be used via the website but there are mobile applications for Android, Apple and Windows. It’s an application for learning languages (the name may give you a clue there) which encourages you to spend five minutes a day learning a new language.

The idea is simple. Play the game, translating simple words and phrases in both directions and gain experience points (‘XP’) which allow you to level up through the language. Learning new skills and (more importantly) completing ‘streaks’ of continuous days played gains you ‘Lingots’ an in-game currency which can buy you useful things (a timed test, or a streak-preserver for instance) or just a new outfit for the games mascot, a rather cute green owl. You can follow friends too, thus allowing you to see who has practised most this week and cheer them on when they are doing well.

There are a wide variety of languages available depending on the language you’re starting from. For English speakers not only are there the obvious candidates (French, Spanish and German) but more unusual options like Esperanto, Swahili or Klingon. The courses are effectively crowd sourced, people volunteer to create the content which means that enthusiasts create courses (hence the more unusual options).

I decided to give it a go and learn Welsh. The first lesson was surprisingly easy (possibly helped by the fact that my six-word grasp of Welsh already included “bore da” and “nos da”) and I was hooked. It is surprisingly addictive. Got five minutes to kill? I’ll just strengthen my skills a little then…

The mobile version is the most accessible way to use it but the notes on the lessons when you visit the website contain some useful grammar tips which I’m not sure how well I’m going to learn. I’m hoping the later lessons will use more complicated constructions and perhaps I’ll learn them by absorption then.

Nine weeks in though and I’m still having fun. “Dw i’n hoffi dysgu Cymraeg”* in fact. I can’t do anything useful with it yet, like read a book or watch S4C, but for now it’s still a fun little game to play.

* I like learning Welsh.



Me, The Stage Manager?

Already CalmI’d never expected to ever be a stage manager. When you work on shows with someone who is an experienced and awesome stage manager then it’s a job that is definitely not available. Plus I’m actually quite happy just moving chairs and tables, making pictures crooked or cleaning blood* off the set and leaving the responsibilities to somebody else.

But when James couldn’t go to the Loxwood Joust this year, and it was suggested that I could stand in for him as stage manager, looking after a few artists on a little stage in the middle of  a woodland, I found myself saying “Yes”. After all, I know the festival already, know my way about a stage and best of all I could get advice and instructions direct from the expert.

So nervously I set off on a Friday night with a new tent, a clock and a clipboard with the running order and detailed instructions attached. My instructions said I needed to acquire a broom and inspecting my domain on arrival I could see that I did, as the stewards were laying out straw bales in the woodland and using the stage as (sorry) a staging post. Still, it was getting dark, so I put my worries aside (mostly) and went to the bar for some mead.

Early the next morning I hung up my clock backstage with a copy of the running order and went in search of the broom. That found, I made a start by sweeping the copious amounts of straw off the stage. Feeling I had now claimed my territory, I settled in to do my job. By midday I had met everyone performing on my stage that weekend and the sound guy (who had the harder job), made a “No Entry” sign and told countless (not many, I just wasn’t counting them) people not to come backstage and, most importantly, got the first act on stage successfully. With some surprise, I realised I actually could do this and somehow my earlier nerves had evaporated. Perhaps I was just too busy keeping track of the time.

Still like all theatre jobs, it evolved over the four days of the festival until I was also plugging in microphones, laying out tambourines and hunting for the juggler’s balls**. All this in a (surprising) glow of calm confidence, and no, it wasn’t just the result of the mead.

Next year I have no doubt James will be back to reclaim his stage and of course he’ll do an even better job than I did, but for once I have been the stage manager and I loved every second.

*Fake obviously. Unless someone really upset the SM…

**Crystal balls. He threw them off stage when he’d finished juggling with them. What did you think I meant?


GoodbyeThis poem was written for a very special lady. I had felt the need to write something anyway but when I learned that she too used to write poetry then it seemed even more important to put something into words.

When someone dies, the funeral is a chance to say goodbye. When it is the funeral of somebody you have never had the chance to meet, then goodbye becomes something more.


Today I have to say goodbye,
A life so precious has gone by.
I’ll meet folk they used to know,
Today goodbye means Hello.

I’m travelling to a far off city
Unknown to me, but quaint and pretty.
This is the place that they called home,
Today goodbye means Hello.

I’m learning now about their life
Poetess and devoted wife,
Friends who miss her kindness shown,
Today goodbye means Hello.

A lady I never got to meet
But who has shaped one close to me,
And so for their loss I will cry,
Today Hello must mean Goodbye.


The Humber Bridge

I’d never seen the Humber bridge before. It’s an amazing structure. The main span is 1410 metres. The towers are 155 metres tall and they are 36mm further apart at the top than the bottom to allow for the curvature of the Earth (at least that’s what the information boards around the area tell you).

We stopped for a look on our way into Hull.

We saw it again on Sunday when we returned for a second photo-shoot with Spencer Tunick, and before we went home we managed to find time for a walk across it too.Humber Bridge