Dragon Slayer 6: Legend of Heroes would be great as it has CD music, and PSG (chiptune) music that you can toggle.
or, the game I made (Insanity), uses either CD or chip audio, and also has ADPCM samples. So you would get a full range of tests from that.
Those are my two suggestions! There are more of course.
as for CD-load times, what do you mean?
We made a cd-loadtime test program here that I still need to take pictures of and post... does that help much?
Are you trying to see if one system is loading slower than the other or something?