[music] composition based on composer's brain activity

Just heard this on Radio 3 and it is ... I don't know. I have to Listen Again. It features the ondes Martenot, an electronic instrument similar to theremin but earlier and odder, of which I'd never heard.

Michel Redolfi, 'Mare Teno' (46 minutes in)

review of the album from which this came and which I have just ordered from Amazon. (Yay Naxos!)