Great LA LA LAND Trailer Witness the new LA LA LAND trailer! The film, written and directed by Damien Chazelle (Whiplash), stars Emma Stone, Ryan Gosling, J.K. Simmons, Finn Wittrock, Rosemarie DeWitt, and John Legend. LA LA LAND will be released in theaters on December 16. Mia, an aspiring actress, serves lattes to movie stars in between auditions and Sebastian, a jazz musician, scrapes by playing cocktail party gigs in dingy bars, but as success mounts they are faced with decisions that begin to fray the fragile fabric of their love affair, and the dreams they worked so hard to maintain in each other threaten to rip them apart.