You combined two great styles!
Yes, that's what it sounds like to me. You took the main style of Super Metroid, and brightened it with Megaman. It's almost like a mash-up, except nothing actually from the latter, just the sounds and that's it. What I'm trying to say is that it sounds like the original, but expanded in a much different manner. I absolutely enjoy this, and it's going on my iPod ;P