Miles Teller Andrew Neiman J.K. Simmons Terence Fletcher Paul Reiser Jim Neiman Melissa Benoist Nicole Austin Stowell Ryan Connolly Chris Mulkey Uncle Frank Nate Lang Carl Tanner Charlie Ian Dustin Jayson Blair Travis Kavita Patil Sophie Damon Gupton Mr. Kramer Suanne Spoke Aunt Emma Max Kasch Dorm Neighbor Kofi Siriboe Bassist (Nassau) C.J. Vana Metz Tarik Lowe Pianist (Studio Band) Tyler Kimball Saxophonist #2 (Studio Band) Adrian Burks Trumpeter #2 (Studio Band) Michael D. Cohen Stage Hand (Overbrook) Jocelyn Ayanna Passerby (Bus Station) Keenan Henson Truck Driver Janet Hoskins Passerby (Dunellen) April Grace Rachel Bornholdt Clifton 'Fou Fou' Eddie Drummer (Quartet) Calvin C. Winbush Saxophonist Marcus Henderson Bassist (JVC) Tony Baker Stage Hand (Carnegie Hall) Henry G. Sanders Red Henderson Wendee Lee Audience Member (uncredited) Michelle Ruff Audience Member (uncredited)