Spacesick NES Game: First Music Test

Hey peeps! As potentially-embarrassing* as it may be, I put together a little sampler of some of the tunes I've been working on for my Nintendo game. I don't know how GOOD they sound, but I'm sure having a blast here in 1990. And I'm free a little later if any of you want to come hang out too! *sips Mr. Pibb and pumps up Reeboks*

I'm not a musician by any stretch of the imagination, so any thoughts or advice could really help! Thanks, guys! :D

* = Yet I feel perfectly fine mentioning the fact that I got all of this text by typing each word into the Legend of Zelda save screen and then taking screenshots. What a world!