Steve

James Corden

Gretta

Keira Knightley

Dan Mulligan

Mark Ruffalo

Violet

Hailee Steinfeld

Dave Kohl

Adam Levine

Miriam Hart

Catherine Keener

Saul

Yasiin Bey

Business Woman

Karen Pittman

Bartender

Paul Romero

Troublegum

CeeLo Green

Jenny

Aya Cash

Phillis

Maddie Corman

Christian Father

Andrew Sellon

Barman

Ed Renninger

Singer Songwriter #2

Eric Burton

Jill

Mary Catherine Garrison

Dave's Fangirl

Jen Jacob

Marco

Marco Assante

CEO

Rob Morrow

Glen

David Abeles

Guy Shouting from Window

Jimmy Palumbo

Mim

Jennifer Li Jackson

Singer

Danielle Brisebois

Malcolm

Ian Brodsky

Rachel

Shannon Walsh

Ballet Teacher

Ann McGowan

Butler

Ron Voz

Troublegum Posse 1 - Rappa DD

Kena Onyenjekwe

Troublegum Posse 2 - Phat Jimmy

Harvey Morris

Troublegum Crew Member - Benson

Terry Lewis

Singing Basketball Player

Colin Love

Lawyer

Simon Delaney

Keen

Keen Ruffalo

Chris

Melissa Maria Gonzalez

Zach

Nicholas Daniel Gonzalez

Homeless Man

David Pendleton

Singer Songwriter #1

Madison Luv

Singer Songwriter 1

Madison Love

On Camera Musician

Joanna Mauer

On Camera Musician

Erik Detusch

On Camera Musician

Rich Mercurio

On Camera Musician

Justin Chauncey

On Camera Musician

Emilie Cardinaux

On Camera Musician

Curtis Fowlkes

On Camera Musician

Emily Yarbourgh

On Camera Musician

Erin Benin

On Camera Musician

Alexis Sykes

On Camera Musician

Julia Bruskin

Young Girl

Stacey Maltin

Concert Attendee (uncredited)

Sama Fernands

Diner Costumer

Sharman Macdonald

Concert Goer Who Have Brooklyn Accent

Nick Balaban

Concert Goer

Jasmine Hope Bloch

Subway Rider

Roger Brenner

Hipster

Alix Cross

Superintendent

Edward Furs

Moshpit Fan

Les Gardonyi

Model

Jacqueline Honulik

A&R President

Jaiden Kaine

Concert Patron

Joe Kane

Bassist

Conrad Korsch

Barfly

Chris Nuñez

Florist

Niyi Oni

Model

Raquel Toro

Audience Member

Ally Tully