Take away her voice.

"You know, Katy, you should be nicer to me, if you ever want to sing again." John told her.

"What the hell are you talking about?" Katy asked, getting angrier at the intruder.

"Try and sing." John instructed her. Katy, with a disbelieving look on her face, opened her mouth and tried to sing a note. Nothing came out. She started to look worried and tried again.

"What did you do!?" She shouted panicked.

"I took away your voice. Like I said, you should be nicer if you want to sing again."

"Please! This is my career! I need to sing!" She began to beg.

"What will you do to get your voice back?" He asked.

"Anything! I have a show in an hour! You want money? I can give you all I have!"