Our most recent session was a musical episode, and I wrote the following custom move for when the villainous Conductor caused PCs to burst into song. (Of course, you could always voluntarily burst into song if you so desired).
When you burst into song, roll 2d6. (You get +1 for Influence over The Conductor or +1 forwards on him) Tell us what genre and style you sing in.
On a hit you use the song to your advantage. Take Influence over an onlooker, clear a Condition, or add 1 Team.
On a 10+, you control what you sing—and get to freely Provoke another character to sing a duet with you. On a 7-9, you bare your soul and sing about feelings or facts you’d rather keep secret. Tell us what they are (the GM will add more for you if needed).
On a 6-, you spill your guts in song, and it’s ugly. Tell us what you reveal and mark a Condition. Other characters present can cancel your influence if they judge it appropriate.
Extra credit: sing a stanza of the song for us to mark Potential (or an additional Potential on a miss)