DJ culture is all about collage - sampling, splicing, dicing - everything is part of the mix, and there are no boundaries between sound sources. When you apply the same logic to the environment, there's a lot of room for mapping sampling techniques to the environment itself.
DJ SpookyI think record cover sleeves really led towards, but at the same time the album as we know it didn't come into being until mainly after the Second World War because record labels realized they'd be able to make a lot more money putting all the singles of an artist onto one album and selling the whole album as a kind of a concept.
DJ SpookyUsually bands would make a song to record for an album, but what happens with the deejays you say "Well the album is everything we need. Thanks band. You can go away now."
DJ Spooky