There are two very crude versions of a riff I've had stuck in my head for a few weeks. The notes in the first are accurate, but it's just the bones of the tune, there are a lot of odd "bubble" sounds in the background which I couldn't replicate.

The tune in the second one isn't as accurate as the first (the high note of the lead synth is sharp) but the drum beat is the right one... Any ideas, anyone?

Mix 1: Extremely sparse but accurate:
http://www.themp3host.com/uploads/be8e07a058.aac

Mix 2: Much better beat & mix, but one sharp note:
http://www.zshare.net/audio/112943970428fcbb/

Ideas, anyone?