Music: "Carefree" by Kevin MacLeod (incompetech.com).
Licensed under Creative Commons Attribution 4.0:
https://creativecommons.org/licenses/by/4.0/

Original track:
https://incompetech.com/music/royalty-free/index.html?Search=Search&isrc=USUAN1400037

Edited, volume-adjusted and mixed with narration for this Matzu video.

Please retain this credit in the description/caption or an accessible adjoining
page when reusing the version with music. The separate silent version contains
no music.