Begin Again

Mark Ruffalo

As Dan Mulligan

Keira Knightley

As Gretta James

Adam Levine

As Dave Kohl

Hailee Steinfeld

As Violet Mulligan

Catherine Keener

As Miriam Hart

James Corden

As Steve

Yasiin Bey

As Saul

Aya Cash

As Jenny

Maddie Corman

As Phillis

Karen Pittman

As Business Woman

Paul Romero

As Bartender

Andrew Sellon

As Christian Father

Ed Renninger

As Barman

Eric Burton

As Singer Songwriter 2

Marco Assante

As Marco

Mary Catherine Garrison

As Jill

Jen Jacob

As Dave Fangirl

Rob Morrow

As CEO

Jennifer Li Jackson

As Mim

Ian Brodsky

As Malcolm

Shannon Walsh

As Rachel

David Abeles

As Glen

Ann McGowan

As Ballet Teacher

Ron Voz

As Butler

Cee Lo Green

As Troublegum

Kena Onyenjekwe

As Troublegum Posse 1 - Rappa DD

Harvey Morris

As Troublegum Posse 2 - Phat Jimmy

Terry Lewis

As Troublegum Crew Member - Benson

Colin Love

As Singing Basketball Player

Jimmy Palumbo

As Guy Shouting from Window

Simon Delaney

As Lawyer

Danielle Brisebois

As Singer

Keen Ruffalo

As Keen

Melissa Maria Gonzalez

As Chris

Nicholas Daniel Gonzalez

As Zach

David Pendleton

As Homeless Man

Madison Love

As Singer Songwriter 1

Joanna Mauer

As On Camera Musician

Erik Detusch

As On Camera Musician

Rich Mercurio

As On Camera Musician

Emilie Cardinaux

As On Camera Musician

Curtis Fowlkes

As On Camera Musician

Emily Yarbourgh

As On Camera Musician

Erin Benin

As On Camera Musician

Alexis Sykes

As On Camera Musician

Julia Bruskin

As On Camera Musician

Stacey Maltin

As Young Girl

Sama Fernands

As Concert Attendee (uncredited)

Sharman Macdonald

As Diner Costumer