cold_elf, a.k.a. Mark Shepherd, has released quite a bunch of good songs on opsound.org. Check them all out! Here's one of my favorites: "Driving with air and whiskey".
Song: cold_elf - Driving with air and whiskey (3:02 min, 4.2 MB)
License: CC-by-sa 2.5
Purchase from: ?
Cargo Cult creates "electro-rock with a tribal, world flair". This piece is more of an ambient, down-tempo, chillout, whatever track. Relax...
Song: Cargo Cult - Vibrant (4:12 min, 3.9 MB)
License: CC-by-nc-sa 1.0