Music by Kevin MacLeod. Available under the Creative Commons Attribution 3.0 Unported license. Download link: http://incompetech.com/music/royalty-free/mp3-royaltyfree/Irregular.mp3

MacLeod's description:

Genre: Modern
Length: 10:18
Instruments: Synths

Quite a challenging piece of the listener, there are only dissonances until with very end of this ten-minute piece. This piece is nothing if not uncomfortable.
ISRC: US-UAN-11-00823
Eerie, Unnerving 2011