Surprisingly enough, über-talented Pitch Perfect actors actually learned how to sing a cappella in real life, and really sing in all the movies. As ScreenRant explains, the movie's filmmakers had to consider "the ability to sing and dance" when choosing the cast. Even more, the outlet states how the actors were brought to Baton Rouge, Louisiana, for a rigorous month-long a cappella boot camp.
In fact, Pitch Perfect actors Anna Camp and Skylar Astin talked to ClevverTV about singing "Since U Been Gone" by Kelly Clarkson live on set. As Astin told the outlet, "what was cool about filming [the song] was that everybody had their unique style and personality," explaining how one cast member sang it like an operatic aria, while Astin improvised a high note that landed him a writing credit. In essence, it's clear that Pitch Perfect actors are really singing in the movie — and yeah, we're even bigger fans now.
That being said, ScreenRant describes how some actors chose to pre-record their real voices in a studio for the first Pitch Perfect, rather than sing live on set. With dancing, jumping, plus some splits, it's easy to see why. But actress Anna Kendrick reportedly refused to pre-record her vocals, telling Collider, "One of the things I was really insistent on was that whenever I'm singing alone in the movie, I'm singing live on set." Whether in a studio or on set, we're shocked by all the actors' impressive musical talents.