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=USUAN1200025

MacLeod's description:

Genre: Soundtrack
Length: 2:46
Instruments: Kora
Tempo: 84

The solid beat and dark melody reverberate, giving the simplicity of this single-instrument piece the feeling of mounting tension and unease. Useful for a documentary showing pain, poverty, or imprisonment.
ISRC: US-UAN-12-00025
044 Grooving, Suspenseful 2010