Stunning actress Keira Knightley and Maroon 5’s Adam Levine star in the upcoming feature film Begin Again.

Moviegoers will see Knightley sing in the movie, a first for the accomplished actress. And Levine, frontman of the band Maroon 5 holds his own in his first acting role.

Knightley recalls being “completely terrified” to sing. She spoke on the red carpet on Saturday where the film closed the Tribeca Film Festival.

Levine said he was “blown away” to be walking a red carpet for a movie role. He says he enjoyed the experience so much he might have caught the acting bug.

Begin Again is directed by John Carney, who was behind the successful musical drama Once. It also stars Mark Ruffalo, Hailee Steinfeld and Catherine Keener. Singer and producer CeeLo Green also has a small role.

Begin Again is a soul-stirring comedy about what happens when lost souls meet and make beautiful music together. Gretta played by Knightley, and her long-time boyfriend Dave, played by Levine, are college sweethearts and songwriting partners who decamp for New York when he lands a deal with a major label. But the trappings of his new-found fame soon tempt Dave to stray, and a reeling, lovelorn Gretta is left on her own. Her world takes a turn for the better when Dan (Mark Ruffalo), a disgraced record-label exec, stumbles upon her performing on an East Village stage and is immediately captivated by her raw talent. From this chance encounter emerges an enchanting portrait of a mutually transformative collaboration, set to the soundtrack of a summer in New York City.

The movie opens in the U.S. in July. Watch the trailer below.