I've heard about what is called a MegaMix from a game called DJ Hero 2, which is, according to them, three different mixes from the game combined in one. This inspired me to do what I call MegaTrack. Instead of three random remixes, it's rather a giant single split up in over three parts.
When I composed this MegaTrack, however, I was forced to leave all my gear behind and go to Texas because of an event had nothing to do with me whatsoever, which was the most horrible and terrible experience imaginable. I figured I had to keep composing anyway, so I ended up creating a track without any real guitar or bass. Normally I despise that, but this track sounded good enough to leave it as is.
Any sampling, cropping, remix, or mashup will be considered copyright infringement!