What are you doing the rest of your life? Not sure? Understandable. But what are you doing December 6 at 9 PM EST?

Next month, just a few days shy of what would have been legendary crooner Frank Sinatra's 100th birthday, the likes of Lady Gaga and Celine Dion will gather to pay tribute at Sinatra 100: an All-Star Grammy Concert, according to PEOPLE. Carrie Underwood, Adam Levine, John Legend and Alicia Keys are also slated to appear.

"I've been singing Frank Sinatra songs in my shows for many years," Dion told the site. "His voice has been such an inspiration for me, and it will always be."

"Nobody could juggle a drink, a conversation, and a perfect vocal as casually as Frank," Levine added. "That's why I love him."

Sinatra, who was born in 1915, sold 150 million albums and won nine Grammys before his death in 1998, and was considered a pioneer of jazz and pop standards. "Let's Fall in Love," "The Way You Look Tonight" and "They Can't Take That Away From Me" are some of his most memorable hits.

The concert will tape December 2 at the Wynn Las Vegas' Encore Theatre and air December 6 at 9 PM EST on CBS.

Excited to see this crowd tackle Ol' Blue Eyes' most memorable tunes? Tell us if you plan to tune in!

See some of these artists most daring stage costumes: