TV: Watch the IN TRANSIT Cast Harmonize in Opening Number!

Broadway's first a cappella musical will open at the Circle in the Square Theatre (235 West 50th Street) on December 11, but fans need not wait that long for a taste of the cast's tight harmonies. Below, check out a music video for the opening number- "Deep Beneath the City."

In Transit stars David Abeles (Once), 2016 "America's Got Talent" contestant Moya Angela (Ghost The Musical), 2012 American Beatbox Vice Champion Steven "HeaveN" Cantor (Broadway Debut), Justin Guarini (Women on the Verge of a Nervous Breakdown; "American Idol"), Telly Leung (Allegiance), Erin Mackey (Amazing Grace), Gerianne Pérez (Broadway Debut), Margo Seibert (Rocky), Chesney Snow (Broadway Debut), James Snyder (If/Then), Mariand Torres (Broadway Debut), Nicholas Ward (On the Town), Adam Bashian (Broadway Debut), Laurel Harris (Beautiful) Arbender Robinson (Shuffle Along) and Aurelia Williams (Broadway Debut).

Featuring an a cappella score from Broadway's freshest creators including musical minds behind Frozen and Pitch Perfect, In Transit is a new, modern musical, bringing to life a vivid tapestry of characters and music in the city that never sleeps...or stands still. Inspired by the vibrant rhythms of life on the subway, In Transit follows the intertwining lives of eleven New Yorkers, all hoping to catch the express train to success, love and happiness-and the stops they make along the way.