Last year I helped Ian Helliwell record the EMS VCS3 (we actually used an EMS AKS) Synthesiser parts for Tristram Cary's 'chance' composition Trios. The piece, which involves 3 performers - one on synthesiser, the other 2 using dice to determine which tracks to play from 2 prerecorded vinyl records, was performed at the Hackney Picture House in March 2013. The dice in this performance were donated to Ian by Tristram Cary himself, and it is Cary's voice you hear at the start of the recording introducing Trios.
We chose to pre-record the synthesizer parts to reel to reel tape and substituted CD's for the original vinyl. Ian provided the projections and directed the video.