Music by Kevin MacLeod. Available under the Creative Commons Attribution 3.0 Unported license. Download link: http://incompetech.com/music/royalty-free/mp3-royaltyfree/Human%20Beat.mp3

MacLeod's description:

Genre: Unclassifiable
Length: 3:08
Instruments: People
Tempo: 150

Four layers of human sounds making a catchy beat. 021
ISRC: US-UAN-11-00395
Bouncy, Bright, Grooving, Humorous 2008