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=USUAN1200085

MacLeod's description:

Time: 2:30 Genre: Soundtrack
Piano, Pipe Organ, Violins

Okay, it SAYS piano, pipe organ, and violins - but it doesn't sound like that. And it SAYS somber, but it isn't really. What this is - is a Really powerful piece.
ISRC: USUAN1200085 Somber 2012