It seems likely that a lot of people who enjoy listening to music probably have a favorite song that they use as their first test track when presented with a new set of speakers, headphones, or other piece of equipment. Mine is Good Luck by Basement Jaxx. It's a fast, crazy song with a lot of bass and a lot of high notes, and strong vocals—it covers a lot of bases and makes a good test track. I remember purchasing the album at Best Buy, opening the CD on the way home, and being consumed with joy just a few seconds after pressing play. I've enjoyed using it as my quintessential test ever since.
Anyone else have a favorite test song?