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=USUAN1100454

MacLeod's description:

Genre: Contemporary
Length: 4:51
Instruments: Piano

A re-recording of an older piece of mine on a new sample set of a Steinway Model D. This one is tuned to Quarter Comma Meantone (and not standard Equal Temperament). In this piece, it gives an unerringly warm feel, as the notes that would be least in tune in this are never used. 013
ISRC: US-UAN-11-00454
Calming, Dark 2008