“La La Land Day” in Los Angeles

The Bandaloop aerial dancers perform on the side of City Hall during the celebration for the film, which is a musical love letter to Los Angeles.

Aerial dancers perform during the celebration at L.A.’s City Hall.

Aerial dancers rappel down City Hall during the festivities.

Spectators below marvel at the aerial dancers high above.

Aerial dancers from Bandaloop wait in the wings to take flight.

Mayor Eric Garcetti, right, along with composer Justin Hurwitz, set decorator David Wasco and director Damien Chazelle watch the show at City Hall.

The Bandaloop aerial dancers perform on the side of City Hall in downtown Los Angeles.

“La LA Land’s” writer-director, Damien Chazelle, at the event held at L.A. City Hall.

Aerial dancers rappel down City Hall and dance across the tower during the “La La Land” Day celebration.

Mayor Eric Garcetti’s official proclamation declaring April 25th “La La Land” Day.

Mayor Eric Garcetti plays piano to close out the festivities in front of City Hall.

The Bandaloop aerial dancers perform on the side of City Hall in downtown Los Angeles.

Mayor Eric Garcetti is flanked by the Bandaloop aerial dancers after they performed on the side of City Hall in downtown Los Angeles during the “La La Land” Day festivities.