Pentatonix to appear in 'Pitch Perfect 2'?: See photos from set

"Pitch Perfect 2" is in production and little bits of casting information have been released along the way. The most notable is that "Sons of Anarchy" star Katey Sagal had joined the movie to play the mother of Hailee Steinfeld's character.

Now, it looks like a notable vocal group will also pop up in the movie at some point. It started when one member of Pentatonix, who won Season 3 of "The Sing-Off," posted a photo from the set of the movie. Scott Hoying, who you might remember from that recent Miley Cyrus medley, shared a photo of a director's chair back from the set, emblazoned with the movie's logo.

A few hours later, the group's official Facebook posted a photo of the whole group on set. Could they be filming roles in the film? Will they play a rival singing group or themselves?

"Pitch Perfect 2" is scheduled to hit theaters May 15, 2015.

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