If you notice that some songs are similar to FalconFive OST, it's because this is its GameBoy rendition. Anyway, Don't forget to read the file's comments.
GlidingSoul, this post by IaTM might prove invaluable if you decide to make more GB-sounding FTMs (using one N163 channel instead of FDS) in the future.
As for the music itself, you just keep improving! I liked stages 1, 5, and 6 the best.
