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
Jen Jacob
Dave Fangirl
Rob Morrow
CEO
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
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)