Evan Rachel Wood was sent a violin before shooting. As well as having some lessons, she copied the correct movements from a video sent to her, in which her violin pieces were played by a professional violinist.
Originally a Disney Channel original movie until it was funded by Columbia-TriStar, with Samuel Goldwyn Films owning the distribution.
There are several references by the film's lead to a fictional orchestral music soloist named Samuel Cardon. The composer for this film is Sam Cardon and the name-dropping was a homage/injoke.
In Jenny's bedroom, you can see *NSYNC, No Doubt, Stone Temple Pilots, blink-182, and Britney Spears posters on the wall.