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=USUAN1100791

MacLeod's description:

Genre: Rock
Length: 1:58
Instruments: Bass, Bass, Kit
Tempo: 120

This low bass guitar piece is dirty ad raw; the strings are forcefully played, and you can hear the vibrations, the squeaks, and the ruggedness, all of which creates a carefree attitude. The drums are barely noticeable. The other bass accompanies the root bass without ever gaining prominence. When the drums stop and the bass plays its final refrain, you can really hear how the music is refreshingly unrefined. 025
ISRC: US-UAN-11-00791
Bouncy, Dark, Grooving 2011