Demonstration was a promotional EP by Colorfinger. This is the only other official release by the band besides their album, Deep in the Heart of the Beast in the Sun, although this release was never meant to be for sale. In fact, the spine says "PROMO ONLY NOT FOR SALE." This was only released on audio cassette.
This release is usually known as the Promotional Demonstration EP, but the title appears to be Demonstration, as that is what appears on the spine as well as on the tape label, with the front saying Demonstration (Promotional).
The first two songs, "Heartspark Dollarsign" and "The Twistinside", were later re-recorded by Everclear, frontman Art Alexakis' next band, for their album Sparkle and Fade. Two of the other songs were covers, of Patsy Cline's "I Fall to Pieces" and John Denver's "Rocky Mountain High".