The right song for the audience

You start playing a tune when casting this spell, and if the target can hear it, it automatically becomes the tune the target within range of your spell loves most.

The target must make a Charisma saving throw. On a failed save, the affected target can't speak a deliberate lie while in the radius. You know whether each creature succeeds or fails on its saving throw. The affected target is aware of the spell and can needs to succeed an additional charisma saving throw if it tries avoid answering questions to which it would normally respond with a lie, or otherwise tell the truth instead.
On it's turn, the affected creature can try to move out of the range of the spell when succeeding an additional charisma saving throw.