Music by Kevin MacLeod. Available under the Creative Commons Attribution 3.0 Unported license. Download link: https://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100461

MacLeod's description:

Genre: Unclassifiable
Length: 3:33
Instruments: Guitar, Kit, Synths
Tempo: 90

This... uhh... hmm... let's call it 'experimental' piece starts out with vanilla guitar and rock drums, and gets progressively crazier as the 8-bit synths take over the piece. Maximum anarchy starts around the 3-minute point. 021
ISRC: US-UAN-11-00461
Grooving, Humorous, Unnerving 2008