At that time, 73 and 74, I became aware that there were a number of us making instruments. Max Eastley was a good friend and he was making instruments, Paul Burwell and I were making instruments, Evan Parker was making instruments, and we knew Hugh Davies, who was a real pioneer of these amplified instruments.

The Musicians Union declared you couldn't mime on Top Of The Pops, which is obviously impossible, if you've got a studio-based record that you'd worked on for a year or something. And there were a lot of terrible performances. Because on Top Of The Pops, you were just thrown onstage.

Paul [ Burwell] and I had also got interested in making books. We'd been working with Bob Cobbing, the sound poet, since the beginning of the 70s, and Bob had this press called Writers Forum.

I had the idea to do an anthology about instrument-making.

I'd entirely forgotten about Pass The Distance, and then I went to Japan in 2000, and was asked to do interviews with all these journalists, who were showing up with bootlegs of this record, asking me to talk about it. I was astonished. It kind of gained momentum.

Sound: always in a state of emergence or decay

There's a sense of trajectories that are extraordinary about a life like this. You can reconnect with people and go back to playing with them after years and years of not even knowing if they're alive.