Sort of on the topic...

How about a CD with music & instructions and what to listen for in evaluating a sound system (sibilance, dynamic range, tight vs. loose bass, compression arificats, phase, etc.)? Something available commercially, maybe? I used to have an LP for setting up phono cartridges, but it has disappeared. My own music is OK for this, but I think these disks would emphasize the errors so that they would be easier to make out. Any suggestions?