Dardove's Compelled Duet

You begin an enthralling performance, and one humanoid you can see within 60 feet must make a Charisma saving throw or be compelled to sing along. On a fail it wastes its action continuing the performance to the best of its ability. On a success, the spell fades, the target can repeat the saving throw at the end of its turn.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, you can target one additional humanoid for each slot level above 2nd. The humanoids must be within 30 feet of each other when you target them.