Bandslam (2009)

Genre: Comedy | Drama | Family | Music | Romance
Tagline: Band Together
starring: Aly Michalka, Vanessa Hudgens, Gaelan Connell, Lisa Kudrow and Scott Porter

Plot: A new kid in town assembles a fledgling rock band -- together, they achieve their dreams and compete against the best in the biggest event of the year, a battle of the bands.

http://www.imdb.com/title/tt0976222/
http://en.wikipedia.org/wiki/Bandslam