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=USUAN1100249

MacLeod's description:

Genre: Polka
Length: 1:45
Instruments: Kit, Tuba, Accordion

Actual instruments - not the normal electronic ones. 022
ISRC: US-UAN-11-00249
Bouncy, Dark, Humorous 2006