WASHINGTON –  Get ready to deck the halls with Rock and Roll Hall of Famers David Crosby, Stephen Stills and Graham Nash.

The trio was just added to the 2015 National Christmas Tree Lighting.

The lineup also includes Grammy-nominated singer Aloe Blacc; chart-topping singer/songwriter Kelsea Ballerini; and the Joyous String Quartet.

The 93rd annual event is presented by the National Park Service and the National Park Foundation.

It will be held Thursday, December 3 on the Ellipse at President’s Park (White House).

Produced by Bounce AEG, the ceremony begins at 4:30 p.m. ET with the exclusive National Christmas Tree Lighting pre-show.

The event can be seen on public television throughout the month of December.

The holiday tradition was started by President Calvin Coolidge in 1923.