MM7 has decent music imo. I agree Turbo Man's stage is mildly annoying but then there's the awesome opening stage theme, which is one of the most epic MM tunes ever, and then there's Shade Man's stage, which is a personal favorite of mine. Freeze Man also has a very nice theme, always gets me pumped up. The soundtrack of MM7 is better than MM5, MM6 and MM1 in the numbered series imo.

Opening theme
Shade Man
Shade Man Remix - This is the best remix of a megaman theme I've found online.
Freeze Man