Pitch Perfect’s soundtrack is one of the movie’s most enduring qualities, but Anna Kendrick's song "Cups" was the true breakout hit. As a musical comedy about a college a cappella group called the Barden Bellas, it makes sense that Pitch Perfect’s songs are central to the movie’s success. However, Beca’s (Anna Kendrick) Barden Bella audition song “Cups” has not only become one of the most popular songs from Pitch Perfect, but it has found mainstream success that transcends the movie altogether.

https://screenrant.com/pitch-perfect-cup-song-success-charts-reason/