Arelith

I'm not suggesting everyone get to learn bard songs and perform them for benefits, just be able to do an action that makes music notes appear above their head and have "John Adventurer sings" appear in the combat log, for the sake of roleplay.

Being able to sing is something even a small child can do; it seems silly that only bards are mechanically able to do so.

The problem with this is that it could also be interpreted as the character being a bard - this being a bard only thing - and it lasts quite a while. So for identity concerns we have to deny this.