For your First song is really good,
I like the catchi tune althought i never played the game, it sounds great. I think u should smooth a bit the changes from theme to theme Example: min 2:07. its not that right to change it that way, it just hears out of place.
Thats the only thing i noticed, the rest It sounds Good and i like it, Specially the Start.
Good Luk man, i hope u make it a OcRemix.
-Kevo