I'm in the middle of having a new CD mastered. Some tracks have drums, bass and lots of instruments. Some have only one or two acoustic instruments and a voice.

I got a preliminary master back from the very capable guy who's doing it. I think the actual volume level of the different songs on the master is pretty much the same. The vocals in the acoustic-only songs, however, seem significantly louder than the vocals on the other tracks. That's probably because of the compression. I remember encountering this issue with previous projects but I didn't do anything about it then.

Has anyone else run into this? I'm considering dropping the levels on the purely acoustic numbers so the vocal levels are more consistent with the other tracks but I'm not sure if that's a good idea. Any advice would be appreciated.