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)

John Carney

Writer

John Carney

Director

Jeanne McCarthy

Casting

Chad Keith

Production Design

Andrew Marcus

Editor

Anthony Bregman

Producer

Tobin Armbrust

Producer

Yaron Orbach

Director of Photography

Stephanie DeCourcey

Casting

Anne Goelz

Art Direction

Gregg Alexander

Original Music Composer

Louise McCarthy

Makeup Department Head

Drew Jiritano

Special Effects Coordinator

Yaneya Rovira

Wardrobe Supervisor

Eileen Goh

Costumer

Lair Paulsen

Key Hair Stylist

Joanna McCarthy

Key Makeup Artist

Richard Hebrank

Construction Coordinator

Cathryn Hunt

Costume Coordinator

Erin Hicks

Hair Department Head

Margaret Moy

Costumer

Suzana Peric

Music Editor

Sean Garnhart

Sound Effects Editor

J. Alex Finch

Second Second Assistant Director

Lewis Goldstein

Supervising Sound Editor

Steven Weisberg

Location Manager

Erich Stratmann

Music Editor

Patrick Cicero

Dialogue Editor

Max Greene

Dialogue Editor

Tom Ryan

ADR Recordist

Tom Ryan

Foley Recordist

Cate Montana

Supervising ADR Editor

Tom Ryan

Foley Editor

Lewis Goldstein

Sound Re-Recording Mixer

Alexis Wiscomb

Post Production Supervisor

Molly Smith

Executive Producer

Maura Kelly

Second Assistant Director

Matthew Sullivan

Music Supervisor

Sam Hoffman

Executive Producer

Arjun Bhasin

Costume Design

Nigel Sinclair

Executive Producer

Marc Schipper

Executive Producer

Ian Watermeier

Co-Producer

Ben Nearn

Executive Producer

Guy East

Executive Producer

Kris Moran

Set Decoration

Shira Rockowitz

Co-Producer

Mariela Comitini

First Assistant Director

Scott Tinsley

First Assistant Camera

Andrea von Foerster

Music Supervisor

Judd Apatow

Producer

Tod A. Maitland

Sound Mixer

Ludovic Littee

"A" Camera Operator

Andrew D. Schwartz

Still Photographer

Rob Harlow

Key Grip

Tom Rice

Executive Producer

Sam Hoffman

Unit Production Manager

Brian Carmichael

Video Assist Operator

Rebecca Breckel

Script Supervisor

James Baker

Boom Operator

Tommy Allen

Property Master

Shawn Greene

Gaffer

Jennifer Crammer

Production Coordinator

Gina Herold

Art Department Coordinator

T.J. Horan

Leadman

Lauren Selig

Co-Producer

Brian Smyj

Stunt Coordinator

Andrew Francis

Digital Intermediate Colorist

Yuval Levy

Visual Effects Supervisor