Glee has booked a perfect guest star.

A Pitch Perfect guest star, to be exact, as Darren cross confirmed via the following Instagram photo yesterday that Skylar Astin will appear on at least one installment of Glee Season 5.

The actor - who previously worked with Lea Michele on Broadway's Spring Awakening - will guest star on a March episode as Jean-Baptiste, the lead singer of Throat Explosion, a group that will take on New Directions at Nationals.

Astin becomes the fourth Spring Awakening alum to stop by the Fox series, as Jenna Ushkowitz, Jonathan Groff and Phoebe Strole all starred in the beloved musical at one point.

The comedy, meanwhile, is on hiatus - but you can watch Glee online now and catch up on anything you may have missed.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.