Gretta (Keira Knightley) and her long-time boyfriend Dave (Adam Levine) are college sweethearts and songwriting partners who decamp for New York when he lands a deal with a major label.

In the 2013 movie "Begin Again," a romantic comedy with music, he doesn't just share the screen with Keira Knightley, he also ...

Similarly down on her luck and new to the USA, she agrees to take a chance and collaborate with him. Starring Keira Knightley and Mark Ruffalo.