Lost bet...

Alastor: Well my dear it seems like you lost our bet which means you get a task from me now for your loss. And I have the perfect task for you in mind dearie. I thought first of letting you give me your soul but where would be the fun in that...instead of taking your soul I decided the perfect task for you is that you have to learn the classic dances to jazz music my dear. he snaps his fingers and you wear dance shoes now