Music to test with:

Actually, there is an excellent reason for using music created with natural acoustic instruments rather than synthesizers or other esoteric electronica. We know (at least musically educated people know) what an oboe, piano, violin, upright bass, or snare drum is suppose to sound like. Nobody really knows what an electric guitar washed through five or six little black boxes is supposed to sound like.

If your concern is only to find a sound that you like, then you can of course use any source you want. If you desire an accurate reproduction system, you'd better start with a known source.

will

Thank you Bishopwill!

Having been to many concerts in different theaters or concert halls from the US to western Europe I have to say that each hall has sounded different. Each time the viola has sounded like a viola but it never sounded the same as in the last hall. Does that mean they used a different viola or was it run through a series of black boxes that caused the sound to change? To say that unamplified flutes are they only music by which to judge the quality of a piece of equipment is ludacrous. What do you know about the acoustics of the setting? Something you might think is the problem of the equipment might just as easily be an acoustic characteristic of the concert hall.
I again ask the question; what is the point of using music with which you are not familiar to test something.
I'm not suggesting ssing2 is wrong, for him/her that might be the perfect piece of music. I'm sure you are not suggesting that fans of heavy metal or techno pop have no place in hi-end audio.
I am looking for suggestions to add to my collection to help in the auditioning process. I did not think I would have to defend my preferences of a broad spectum of music.

In addition to the common James Taylor-type recordings, these are some of my other favorite "demo" discs:

City of Angels - Soundrack
I am Sam - Soundtrack
Ben Folds - Rockin' the Suburbs
Thomas Dolby - Alien ate my Buick
Dire Straits - Brothers in Arms XRCD2
Grateful Dead - Dicks Picks 17
Ray Brown - Soular Energy
Dave's True Story - Sex without Bodies
Apollo 13 Soundtrack (track 20)
The Firm Soundtrack

(I know, a lot of soundtracks, but I like that they have various artists on a single disc and usually offer a consistant recording quality across the disc.)

Nrchy, your point is well taken, but in the end most classical music will be a purer source as the same argument can be made re: music that has electronicly manipulated and then performed in a given space. I don't believe any one is trying to suggest that any particular type of recorded music is the perfect tool for evaluation, just which ones are prone to the least alteration prior to play back. The less alteration the greater the fidelity. Some things are for all practical puposes out of most audiohiles hands. Unless you are evaluating equipment in the same time and space as the perfomance (recoding engineer),or you have a room that is exactly like the recording venue and you know it, perfect evaluations are not likely. But the quest to do our best goes on. With out some standard (sub standard?) the point of this forum would be moot. As if comparing a viewing of paintings with others who have viewed them through different colored lenses. Personaly, I use a variety of acoustic and electronic recordings as they each have specific qualities that make evaluations easier. Good listening.