TRUTH:
The problem with the music in PCE Rastan Saga II, I think, is the EXECUTION. The tunes themselves are fine, but they simply don't use the best instruments/sounds/mix levels/etc.
Ultimately, it sounds unnecessarily harsh, cheap, pathetic, tinny, amateurish. Think *IREM* and their missteps on PCE when it comes to music.
The main tune in Rastan is a muddled, all-treble, neo-medieval romp that quickly becomes repetitive. (It has some bizarre charm, catchiness, though. I used to hate this tune, but now it has grown on me.)
But, listening to Rastan's music independent of the game, and with a pair of headphones that can deliver some bass... well, Rastan Saga II is not that bad in the music department. There is more complexity to the compositions than you might realize. You can certainly do a lot worse in the PCE library.