Miles TellerAndrew Neiman
J.K. SimmonsTerence Fletcher
Paul ReiserJim Neiman
Melissa BenoistNicole
Austin StowellRyan Connolly
Chris MulkeyUncle Frank
Nate LangCarl Tanner
Charlie IanDustin
Jayson BlairTravis
Kavita PatilSophie
Damon GuptonMr. Kramer
Suanne SpokeAunt Emma
Max KaschDorm Neighbor
Kofi SiriboeBassist (Nassau)
C.J. VanaMetz
Tarik LowePianist (Studio Band)
Tyler KimballSaxophonist #2 (Studio Band)
Rogelio Douglas Jr.Trumpeter #1 (Studio Band)
Adrian BurksTrumpeter #2 (Studio Band)
Joseph BrunoTechnician (Overbrook) - Mike
Michael D. CohenStage Hand (Overbrook)
Jocelyn AyannaPasserby (Bus Station)
Keenan HensonTruck Driver
Janet HoskinsPasserby (Dunellen)
April GraceRachel Bornholdt
Clifton 'Fou Fou' EddieDrummer (Quartet)
Calvin C. WinbushSaxophonist
Marcus HendersonBassist (JVC)
Tony BakerStage Hand (Carnegie Hall)
Henry G. SandersRed Henderson
Sam CampisiAndrew (8 years old)
Jimmie KirkpatrickNassau Trumpeter #2
Keenan AllenStudio Core Member #1
Ayinde VaughanStudio Core Member #2
Shai GolanStudio Core Member #3
Yancey WellsStudio Core Member #4
Candace RobergeStudent #1
Krista KilberStudent #2
Stephen HsuJVC Guitarist (uncredited)
Herman JohansenMusic Competition Judge (uncredited)
Wendee LeeAudience Member (uncredited)
Joseph OliveiraBartender (uncredited)
Michelle RuffAudience Member (uncredited)
Daniel WeidleinStudio Band Saxophone Player (uncredited)