Mark Ruffalo

Dan Mulligan

Keira Knightley

Gretta James

Adam Levine

Dave Kohl

Hailee Steinfeld

Violet Mulligan

Catherine Keener

Miriam Hart

James Corden

Steve

Yasiin Bey

Saul

Aya Cash

Jenny

Maddie Corman

Phillis

Karen Pittman

Business Woman

Paul Romero

Bartender

Andrew Sellon

Christian Father

Ed Renninger

Barman

Eric Burton

Singer Songwriter 2

Marco Assante

Marco

Mary Catherine Garrison

Jill

Jen Jacob

Dave Fangirl

Rob Morrow

CEO

Jennifer Li Jackson

Mim

Ian Brodsky

Malcolm

Shannon Walsh

Rachel

David Abeles

Glen

Ann McGowan

Ballet Teacher

Ron Voz

Butler

Cee Lo Green

Troublegum

Kena Onyenjekwe

Troublegum Posse 1 - Rappa DD

Harvey Morris

Troublegum Posse 2 - Phat Jimmy

Terry Lewis

Troublegum Crew Member - Benson

Colin Love

Singing Basketball Player

Jimmy Palumbo

Guy Shouting from Window

Simon Delaney

Lawyer

Danielle Brisebois

Singer

Keen Ruffalo

Keen

Melissa Maria Gonzalez

Chris

Nicholas Daniel Gonzalez

Zach

David Pendleton

Homeless Man

Madison Love

Singer Songwriter 1

Joanna Mauer

On Camera Musician

Erik Detusch

On Camera Musician

Rich Mercurio

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

On Camera Musician

Stacey Maltin

Young Girl

Sama Fernands

Concert Attendee (uncredited)

Sharman Macdonald

Diner Costumer

John Carney

Director

John Carney

Writer

Tobin Armbrust

Producer

Anthony Bregman

Producer

Gregg Alexander

Original Music Composer

Yaron Orbach

Director of Photography

Andrew Marcus

Editor

Stephanie DeCourcey

Casting

Jeanne McCarthy

Casting

Chad Keith

Production Design

Anne Goelz

Art Direction

Richard Hebrank

Construction Coordinator

Drew Jiritano

Special Effects Coordinator

Yaneya Rovira

Wardrobe Supervisor

Margaret Moy

Costumer

Eileen Goh

Costumer

Cathryn Hunt

Costume Coordinator

Erin Hicks

Hair Department Head

Lair Paulsen

Key Hair Stylist

Louise McCarthy

Makeup Department Head

Joanna McCarthy

Key Makeup Artist

Steven Weisberg

Location Manager

J. Alex Finch

Second Second Assistant Director

Alexis Wiscomb

Post Production Supervisor

Suzana Perić

Music Editor

Erich Stratmann

Music Editor

Lewis Goldstein

Supervising Sound Editor

Lewis Goldstein

Sound Re-Recording Mixer

Max Greene

Dialogue Editor

Patrick Cicero

Dialogue Editor

Cate Montana

Supervising ADR Editor

Tom Ryan

Foley Editor

Sean Garnhart

Sound Effects Editor

Tom Ryan

Foley Recordist

Tom Ryan

ADR Recordist

Andrea von Foerster

Music Supervisor

Matthew Sullivan

Music Supervisor

Arjun Bhasin

Costume Design

Shira Rockowitz

Co-Producer

Ian Watermeier

Co-Producer

Lauren Selig

Co-Producer

Sam Hoffman

Executive Producer

Molly Smith

Executive Producer

Tom Rice

Executive Producer

Ben Nearn

Executive Producer

Guy East

Executive Producer

Nigel Sinclair

Executive Producer

Marc Schipper

Executive Producer

Judd Apatow

Producer

Sam Hoffman

Unit Production Manager

Mariela Comitini

First Assistant Director

Maura Kelly

Second Assistant Director

Brian Smyj

Stunt Coordinator

Kris Moran

Set Decoration

Ludovic Littee

"A" Camera Operator

Scott Tinsley

First Assistant Camera

Andrew D. Schwartz

Still Photographer

Brian Carmichael

Video Assist Operator

Rebecca Breckel

Script Supervisor

Tod A. Maitland

Sound Mixer

James Baker

Boom Operator

Rob Harlow

Key Grip

Shawn Greene

Gaffer

Jennifer Crammer

Production Coordinator

Gina Herold

Art Department Coordinator

T.J. Horan

Leadman

Tommy Allen

Property Master

Andrew Francis

Digital Intermediate Colorist

Yuval Levy

Visual Effects Supervisor