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=USUAN1100647

MacLeod's description:

Genre: Soundtrack
Length: 0:37
Instruments: Tuba, guitar, percussion, clarinet,
Tempo: 142

Happy bouncy theme for a comic hero! Written for Craig Knitt's short "Happy Boy".
ISRC: US-UAN-11-00647
Bouncy, Bright, Humorous 2009