In this ten-minute video, Kirby Ferguson explains how the basic elements of a "remix" are actually the core parts of all creative work. Ferguson uses Bob Dylan as a case study -- and he's right to do so. Dylan's early work was clearly based on other folk tunes, and there's nothing wrong with that. Dylan modeled himself largely on Woody Guthrie, who is also mentioned in here. Guthrie's immortal quote is put in context: "The words are the important thing. Don't worry about tunes. Take a tune, sing high when they sing low, sing fast when they sing slow, and you've got a new tune." This is great stuff, in a bite-sized format that's easy to digest. Witness:

See also: Ferguson's in-depth series, Everything is a Remix.