Latin Grammys 2018

Lionel Richie Gives Fellow 'Idol' Judge Luke Bryan a Piano Lesson

Terry Wyatt/Getty Images
Lionel Richie and Luke Bryan attend CMT Artists Of The Year 2013 on Dec. 3, 2013 in Nashville.

"All you need to do is find four chords."

That's the advice that newly minted American Idol judge Lionel Richie gives fellow new judge Luke Bryan during a quick backstage piano lesson during the first auditions for the upcoming reboot of the reality series. In a clip posted on Instagram, Katy Perry, who rounds out the show's panel, leans on the piano and admires both Bryan's playing and Richie's advice.

Although the judges haven't known each other personally for that long, it appears they're already becoming close friends. Bryan has covered some of Richie's tunes in concert -- and they've even performed live together -- so it's no surprise to see them bonding over a basic piano lesson. 

Check out the endearing moment below.