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=USUAN1100068

MacLeod's description:

Genre: Soundtrack
Length: 0:52

Low strings / glass harmonica. Wind/String/Percussion diminished chord build with crescendo and sting on the end. (written for Darker Projects' Falcon Banner Episode 4) 035
ISRC: US-UAN-11-00068
Dark, Mysterious, Epic, Suspenseful 2006