The problem with improvisation is, of course, that everyone just slips into their comfort zone and does sort of the easy thing to do, the most obvious thing to do with your instrument.
Brian EnoThe Marshall guitar amplifier doesn't just get louder when you turn it up. It distorts the sound to produce a whole range of new harmonics, effectively turning a plucked string instrument into a bowed one. A responsible designer might try to overcome this limitation - probably the engineers at Marshall tried, too. But that sound became the sound of, among others, Jimi Hendrix. That sound is called electric guitar.
Brian EnoIn terms of what has been happening recently, there have been, I think, some really interesting new instruments that have come out that sort of show me the direction of the future. Korg has introduced the - they've had a whole series now of these things called Kaoss Pads. They're wonderful because they do get your muscles working again. And what DJs do, of course, with their DJ turntables now, the CD turntables, which have pitch change and speed change and everything else. They're doing something that I think is interestingly physical.
Brian Eno