I like the ominous beginning and how it evolves into an upbeat one. It progresses a little slowly for my tastes, and the transition at 1:01 was a little sudden, but it's catchy and I like the instruments. I think you should work on varying it more. It just got a little repetitive. Even so, I like what you did at 2:32 with those chords, and the part leading into the part at 3:16 is very climactic, which is good, even though the transition at 3:16 itself could've been smoother. It's not my favorite style of music, but I liked the structure. I like how you went back to that ominous mood at the end. ;) Keep it up, man! :)