Live shows on air: Playing an instrument on radio.

[Lefinch]

I personally would not want this in the game because I find instruments loud and annoying.

Not that it's a bad idea. Maybe a cool down like you suggested would be fine.

It's a fair point. If possible, a good side option to have would be like vinyls and radio ads: A chat link to stop the transmission for you personally, for those who like to pick and choose what they hear/are subjected to.