The Hollywood Reporter confirms that Keener will star alongside Keira Knightley, Adam Levine and Mark Ruffalo in the drama, playing Ruffalo's estranged wife.
© WENN
© WENN / Manuil Yamalyan
Written and directed by John Carney, the film sees Knightley's character dumped by her boyfriend after moving to New York to pursue a singing career.
After her chance meeting in a bar with Ruffalo's down-on-his-luck record producer, both are forced to re-evaluate their outlook on life.
Carney last helmed the intimate 2006 film Once, which has since been turned into a Tony award-winning Broadway show.
Watch a trailer for Once below:
