So, this is a great album- the sound is rich and clear. The sound samples, when used, are crisp. It's just pleasant to listen to and a cut above most other things one hears. I would recommend Loading Theme (and its variant Unknown BGM 1), Title Theme, Stage BGM 5, Stage BGM 6, Stage BGM 8, Unknown BGM 1. 8.75/10.
Anyway, review aside: The album frequent has dips in volume, where it grows quiet briefly and then gets louder. It's all throughout the album after track 4 (in which it happens at 0:23 and then 0:23, 0:43, 1:03, 1:19).