Glee: The 3D Concert Movie trailer has debuted on the internet.
The movie mixes live performances with behind-the-scenes footage.
Stars Lea Michele, Cory Monteith, Dianna Agron, Chord Overstreet, Darren Criss, Chris Colfer, Kevin McHale, Heather Morris, Jenna Ushkowitz and Amber Riley all feature.
Glee co-creator Ryan Murphy has recently announced that Michele, Monteith and Colfer will not be returning to the show after the end of the third season.
Chord Overstreet has aldready confirmed that he is to leave the hit musical series.
Glee: The 3D Concert Movie is released on August 19.
Musical movie stars...