Yes on both account
You need written permission from the artist if the music is not released as CC, and with CC you have several restiction-options
CC0 is totally free for all.
https://creativecommons.org/publicdomain/zero/1.0/
You need written permission from the artist if the music is not released as CC, and with CC you have several restiction-options
CC0 is totally free for all.
https://creativecommons.org/publicdomain/zero/1.0/