you had me worried... then I was cheering.
I get worried when I read things like "I finished this in 5 minutes" because, to me, that means the creator is either lazy, overconfident, or not a perfectionist. I believe that if someone is posting for an audience it should be pretty damned close to their best effort.
Fortunately, this wasn't the case here. I don't think you've cut corners. So if I could add a sentence to your description, it would read something like:
"I'm wasting less time making these songs now as my skills with the equipment have increased." something like that (hopefully a bit less wanky than that though!)
Jeez... haven't even got to reviewing it yet... blabberboy.
I enjoyed this! Good transitions between sections... good variety of FX... good mix... I like the speed of it too, this is my kind of speed. This would make a killer backing track to a fast paced action game... I'm thinking SuperSpaceInvaders... ninjas kicking the crap out of each other from all directions. Great stuff.