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=USUAN1100833

MacLeod's description:

Genre: Polka
Length: 3:22
Instruments: Synths
Tempo: 144

8-bit-sounding electronic polka,
ISRC: US-UAN-11-00833
Bouncy, Bright, Humorous 2011