Watch the trailer of American romantic musical comedy-drama film `La La Land`
Director: Damien Chazelle
Cast: Emma Stone, Ryan Gosling, J.K. Simmons, Finn Wittrock, Rosemarie DeWitt, Sandra Rosko, Hemky Madera, Josh Pence, John Legend, Callie Hernandez, Ana Flavia Gavlak, Ashley Caple, Meagen Fay