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.
Editing is now the easiest thing on earth to do and all the things that evolved out of word processing – 'Oh let's put that sentence there let's get rid of this' – have become commonplace in films and music too.