Bridget Riley (b. 1931)

'I think that if one thinks of what music actually is, (...) a variety of sounds, (...) some wind, some string, some drums, and all these various amazing varieties, which are organised according to really strict structure, and the two, that complements them, and helps them to be heard, helps them to play literally their real character. So the drum is really a drum, you know, if it's properly placed within beats and bars. And so that it was that you need not be afraid of a very strict structure in dealing with sensory matters, because it can enhance them and support them.' (B. Riley, quoted in 'John Tusa Interview with the Artist Bridget Riley' reproduced at www.bbc.co.uk).