Music by Kevin MacLeod (original composer: unknown). Available under the Creative Commons Attribution 3.0 Unported license. Download link: https://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100263

MacLeod's description:

Genre: Holiday
Length: 4:07
Instruments: Piano

Piano solo of the traditional holiday piece. Very smooth with seemingly random phrasing. This isn't really a sing-along type recording. 004
ISRC: US-UAN-11-00263
Relaxed, Calming 2005