I got interested in the idea of music that could make itself, in a sense, in the mid 1960s really, when I first heard composers like Terry Riley, and when I first started playing with tape recorders. – Brian Eno

Once music ceases to be ephemeral – always disappearing – and becomes instead material… it leaves the condition of traditional music and enters the condition of painting. It becomes a painting, existing as material in space, not immaterial in time. – Brian Eno