The Zac Brown Band's frontman, Zac Brown, has been added to the lineup of the upcoming Sinatra 100 -- An All-Star Grammy Concert event.

Brown is one of four new additions to the concert, which will also feature Garth BrooksCarrie UnderwoodJohn Legend, Alicia Keys, Adam LevineUsherCeline Dion, Lady Gaga, Harry Connick Jr. and Tony Bennett. The artists will all be performing Frank Sinatra's many classic and iconic songs in celebration of what would have been his 100th birthday; the music legend died in 1998, at the age of 82.

The Zac Brown Band were most recently on TV to perform their newest single, “Beautiful Drug,” at the 2015 CMA Awards. The EDM-influenced track is off of their newest album, Jekyll + Hyde.

“Our boundaries have dissolved,” Brown explains of the material on Jekyll + Hyde as a whole, “and we’re going to still do things that are somewhat familiar that people like, but we’re also going to stretch out and take chances beyond what we’ve done before.”

Sinatra 100 -- An All-Star Grammy Concert is being pre-taped on Dec. 2 at the Encore Theatre at the Wynn Las Vegas. It is set to air on CBS on Dec. 6 at 9PM ET.

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