The band's theatrical work, which combines movement, puppetry, and music to tell original folk tales, has been described as "Once meets Peter and the Starcatcher" by BroadwayWorld.

[2] The members of the group cite The Decemberists, Anaïs Mitchell, Woody Guthrie, Forrest Gump, Neil Gaiman, and Jim Henson's The StoryTeller as among their influences.

The show, titled The Hunter and the Bear, was an original folk tale told through movement, music, and puppetry, and set the aesthetic for the group's projects moving forward.

The production proved extremely popular, but the group did not seriously consider forming a theater company that could exist after graduation until they collaborated again for Playground the following year.

Bremen was acclaimed on release, with compliments to its layered harmonies and "Americana instrumentation" and comparisons made to British folk rock band Mumford & Sons.

Following their graduation from Carnegie Mellon, the group revised The Nightmare Story for their first major New York City production in 2011 at the Irondale Center.

[12] The company's first full-scale production, The Old Man and the Old Moon debuted Off-Broadway at The Gym at Judson, running from October 4, 2012 to January 6, 2013, with previews beginning September 26.

On March 26, 2018, PigPen Theatre Co. announced they would be collaborating with playwright Rick Elice on a musical adaptation of Water for Elephants by Sara Gruen.

[24] The original Broadway cast includes Grant Gustin, Isabelle McCalla, Gregg Edelman, and Paul Alexander Nolan.

[27] To promote the release of the album Bremen, the band created a music video for the title track in collaboration with Buffalo Picture House.