If you've ever wondered how much work goes into your favorite Pitch Perfect performances, wonder no more. In this exclusive behind-the-scenes look at the filming of Pitch Perfect 3's rendition of "Toxic" (from the film's Blu-ray and DVD, which is out March 20!), it's pretty mind-blowing to consider all of the spinning plates stars Anna Kendrick, Brittany Snow, Anna Camp, Hailee Steinfeld, and the rest of the talented cast have to balance while belting out a Britney Spears hit. In this case, the Barden Bellas have to perform the song and nail choreography and face off against John Lithgow. Watch how they pulled everything together above!