In "La La Land," Emma Stone and Ryan Gosling pay homage to the musical
Bright, primary-hued and boldly staged as if to occur in one unbroken shot, the "La La Land" prologue sets the stage for what's to come: a nostalgic boy-meets-girl romance shot through with winsome musical numbers and modestly charming dance numbers that, at its core, makes a dazzling case for movies as they used to be.