VIDEO: DEAR EVAN HANSEN's Ben Platt Performs 'Waving Through a Window' on 'Late Night'

On last night's LATE NIGHT WITH Seth Meyers, Dear Evan Hansen's Ben Platt and Laura Dreyfuss performed "Waving Through a Window." Later, Platt explains why the show causes a lot of tear from the audience. Watch all the clips below!

With a book by Obie Award-winnerSteven Levenson, score by Tony Award nominees Benj Pasek & Justin Paul, and direction by 3-time Tony Award nominee Michael Greif, Dear Evan Hansen began previews on November 14 and will officially open at the Music Box Theatre (239 W 45th St) on Sunday, December 4, 2016.

A letter that was never meant to be seen, a lie that was never meant to be told, a life he never dreamed he could have. Evan Hansen is about to get the one thing he's always wanted: a chance to finally fit in. Both deeply personal and profoundly contemporary, Dear Evan Hansen is a new American musical about life and the way we live it.

Photo by: Lloyd Bishop/NBC