Music by Kevin MacLeod (original composer: J. S. Bach). Available under the Creative Commons Attribution 3.0 Unported license. Download link: https://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100350

MacLeod's description:

Genre: Classical
Length: 8:41
Instruments: Pipe Organ
Tempo: 80

J. S. Bach's most famous organ piece. BWV 565. (Beckerath German baroque pipe organ) 008
ISRC: US-UAN-11-00350
Dark, Epic 2007