A mashup, bootleg or blend (also mash up and mash-up) is a song or composition created by blending two or more songs, usually by overlaying the vocal track of one song seamlessly over the music track of another.
These are photos from concerts where Mash Up played, so they may be of other bands that played the concert as well.
Download Festival 2006 Sep 30, 2006 San Francisco, California, United States Uploaded by Eric Q