I'm looking for a movie it's in it's 1980's or maybe 1990's. It's about a girl named ann. She had a brother. Ann Played the panio and would steal music boxes from her music teacher. Later in the movie she went to a hospital and to find out there was other girls name Ann too. If you know this movie please let me know

Yeah, this is 1983's Anna to the Infinite Power (http://www.imdb.com/title/tt0085169/). It features the veteran Dina Merrill, Martha Byrne (now a soap opera actress), and the late Jack Gilford.