What albums take advantage of every musicality once in a great sounding audio system? For instance, what album would you take with you to test out new speakers or audio equipment? A lot of people have been saying the Norah Jones album and I know it won the best engineering grammy, but the vocals are too prominent for me. I want something where the vocals aren't dominant. What are your favorites?

Flaming Lips: "Zaireeka". If you can even play it properly, you've got one hell of a system.

In terms of musicallity, classical is the standard test of fidelity. Or something extremely well recorded and textured. Eno's albums spring to mind.

the vast majority of what I listen to is instrumental/dance music, so bass is rather importent to me. My faves are

Get F***ed: Wet Dreams (UK Import) The bass drops really (and I mean really) deep at one point, where it sounds like a hole has been punched in the floor.

Mutiny UK - In the Now For fans of Basement Jaxx and Daft Punk. On one of the tracks the vocals collapse on themselves to sound like the voice as fallen down a tunnel, has to be heard to be believed.

Art of Noise - Ambient Collection: music, soundeffects and and expansive soundfield create a fantastic aural experience.

Vocal wise and the mixing of orchestration:
Tommy - Original Broadway Cast recording (notable track: "Tommy's Holiday Camp") Les Miserables/Miss Saigon - Complete Cast Recording and The Secret Garden - Cast Recording.