Original soundtrack movie Begin Again: TELL ME IF YOU WANNA GO HOME
Leader singer (Gretta): Keira Knightley
Female guitar player (Violet): Hailee Steinfeld
Bass player (Dan): Mark Ruffalo

Begin Again Cast:
Keira Knightley as Gretta James, a songwriter
Mark Ruffalo as Dan Mulligan, a music producer
Adam Levine as Dave Kohl, Gretta's ex-boyfriend and a successful musician
Catherine Keener as Miriam Hart, Dan's estranged wife
Hailee Steinfeld as Violet Mulligan, Dan and Miriam's daughter
James Corden as Steve, Gretta's best friend
CeeLo Green as Troublegum, a successful rapper who was discovered by Dan Yasiin Bey as Saul, Dan's long-time business partner