Corrected entry: When the girls are in the bus singing "party in the USA" they try to get Beca to sing by not singing her part. Meanwhile Fat Amy is driving and can't see what is going on and she is just singing with them, but when the girls stop singing to get Beca to join in, Amy somehow stops too, despite having no way of knowing the others were about to stop.
moviemaster101
24th Dec 2012
Correction: Rearview mirror. Amy knows exactly what's going on.
Phixius ★