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=USUAN1100225

MacLeod's description:

Genre: Polka
Length: 2:20
Instruments: Kit, Trumpet, Clarinet, Sax, Bass, Electric Guitar, Accordion

Full polka ensemble. She's a peppy one, she is. Instrumental. 022
ISRC: US-UAN-11-00225
Bright, Driving, Bouncy 2006