Elizabeth's Piano Lessons (Sweet Valley Kids Series #45) - Francine Pascal - Paperback

Summary: Identical twins Elizabeth and Jessica Wakefield are taking piano lessons. Jessica loves them. Elizabeth hates them. They can't stop fighting about it. Elizabeth is doubly mad because Jessica bullied her into taking the lessons. Now the twins are supposed to play a duet at a recital. The better Jessica plays, the worse Elizabeth does. Will Elizabeth get her revenge by ruining Jessica's big day--on purpose?