Pitch Perfect is een Amerikaanse filmkomedie uit 2012 onder regie van Jason Moore. Het script is van Kay Cannon en is een vrije bewerking van het gelijknamige boek van Mickey Rapkin. De film kwam 28 september 2012 uit in de Verenigde Staten. De hoofdrollen in de film zijn weggelegd voor Anna Kendrick, Rebel Wilson, Brittany Snow, Skyler Astin en Anna Camp.
, a Barden freshman, has no desire to go to college, but is forced to attend by her father, a professor at the university. Wishing to instead move to Los Angeles to pursue a career in music making, she takes up an internship at the school radio station, where she meets fellow freshman Jesse Swanson who intends to start to have a not-so-secret crush on Beca. When Beca's father finds out that Beca has not been attending classes, he offers to let Beca go to Los Angeles (which he will help pay for) if she joins a club and proves that she wants to be involved for the rest of the year. After some persuasion from Aubrey Posen, the group leader, and Chloe Beale, she joins the Bellas (an all girl acapella group), along with a group of other women who do not fit the Bellas' typical mold, including Cynthia-Rose, the sexually driven Stacie Conrad, the awkwardly quiet Lilly Onakuramara, who speaks inaudibly, and the irresponsible and eccentric Fat Amy.
At practice, Aubrey's controlling nature gets on the nerves of the other girls, especially Beca. She is constantly critical and insists that they use the same set list the Bellas have been using for years, which clashes with Beca's original style. Meanwhile, Beca hangs out with Jesse, who has joined the Treblemakers, the Bellas' main rival. Aubrey warns the group not to have any sexual contact with the Treblemakers, or they'll be forced to leave the Bellas. Beca plays several of her own mixes of contemporary songs for him, and he compliments her for her talent. He then tries to get Beca to watch the ending of The Breakfast Club, one of his favorite movies, after Beca tells him she does not like movies and would rather go to a gynecologist or relive her parents divorce because they bore her and she never makes it to the ending.
Despite their issues, the Bellas attend the regional acapella competition. In spite of their distasteful set list, the group manages to place second at the regional acapella competition, which gives them the bid to semi-finals. On the way to the semi-finals, the group stops for gas where Fat Amy is hit with a burrito by Bumper Allen, the leader of the Treblemakers, as they drive past in their own bus. After the other girls clean her up, they continue on to the venue but run out of gas since Fat Amy forgot to put any in the bus. They are then forced to call the Treblemakers to drive them to the venue, which then leads to some smack talk during the car ride there.
At the semi-finals, Beca notices how bored the audience is with Aubrey's traditional (but overused arrangement), so she provides impromptu back-up, La Roux's. The Bellas come in third in the competition behind the Treblemakers and the Footnotes. Even though the audience was pleased, Aubrey is not and she yells at Beca, who quits the group after yelling at both Aubrey and Jesse. The Bellas make it into the Nationals after the Footnotes are disqualified because their lead singer was discovered to be in high school, not college. The Bellas get back together after spring break, but Beca is not included.
During this time, Beca begins working as a DJ at the university radio station, playing her music on the overnight shift, and also steadily distancing herself from Jesse. She finds a copy of "The Breakfast Club" and watches it. She realizes how much she needs the Bellas in her life. Her father convinces her to rejoin the Bellas, who she finds falling apart. The Bellas, complete once again, have a heart-to-heart and appoint Beca as the leader. During their heart-to-heart talk session they reveal secrets and decide use Beca's 21st-century mash-ups. Meanwhile, Bumper leaves the Treblemakers after being offered a job as a back-up singer for John Mayer. Jesse persuades the Trebles to allow Benji to join the group to replace Bumper.
At the National competition, the Bellas sing a piece arranged by Beca. The Bellas win the competition and Beca and Jesse reunite with a kiss. Fast forward to 6 months later with new auditions, where it shows Jesse and Benji sitting at a desk in the auditions hall, followed by Beca and the Bellas, along with their Nationals trophy, preparing to select new members for their groups.