Music by Kevin MacLeod (original composer: James Pierpoint). Available under the Creative Commons Attribution 3.0 Unported license. Download link: https://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100187 [There are two "Jingle Bells" songs listed. This is the FIRST one.]

MacLeod's description:

Genre: Holiday
Length: 1:42
Instruments: Piano, Glock, Celesta
Tempo: 120

Loud manic sing-along-but-don't-take-a-breath version recorded for a stage production. 004
ISRC: US-UAN-11-00367
Bouncy, Bright, Uplifting 2007