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=USUAN1100033

MacLeod's description:

Genre: Soundtrack
Length: 2:39
Instruments: Piano, Cello, Clarinet
Tempo: 56

More contemplative than outright depressing. Tempo is highly variable, so don't count on it if you have to synch to something. I didn't know there was a tradition of writing for this instrumentation. It works very well. 036
ISRC: US-UAN-11-00033
Relaxed, Calming, Somber 2007