A 32 year old BASIC programming challenge, solved
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Is this the event in Oxford, with a bunch of speccy 48s hooked up with one of these? http://spectrum.alioth.net/doc/index.php/Spectranet
(I think there would have been a Raspberry PI in the mix somewhere as a network metronome)
We had a bit of a discussion about how it might have been done back in the day using 1 bit input ports and a Spectrum doling out sync pulses.
Edit: Though the Spectranet's auto-loading of the code made things far easier than it would have been with loading 12 Spectrums from tape!
Mahler's first symphony, as played
by 12 networked Sinclair ZX Spectrums
The first 7 minutes are explanations of the challenge and how it came to be. Actual "performance" starts at the 7 minute mark.