Dude, that was an impressive arranged soundtrack! My favs were of Brinstar and Redsoil. Both had that jungle-feeling to them and red soil had a bit of that Mayan flute thing going on which really sold me. Ridley's lair theme is one that I've heard time and again in terms of remixes and (even in Metroid Prime) has failed to live up to its Super Metroid counterpart. Your remixe is the closest I've heard to recapturing that magic. I also found it interesting that you had lavaflow noises in the background of the tune. Overall, bravo!