WATCH: 'American Idol' Top 20 Sing 'Lean on Me' for a Good Cause
The short performance also shares what the upcoming live shows may look like.
Lionel Richie
'American Idol' Won't Truly Be Live, But It'll Come Close
The show's producers sketched out how Season 18 will look and operate.
Luke Bryan Owes His 'American Idol' Role to Lionel Richie
Bryan and his fellow 'Idol' judges sat down with 'Jimmy Kimmel Live' to share some stories of their behind-the-scenes hijinks, and how the show came together.
Lionel Richie Is Returning to Country Music
"It's gonna be something surprising," he says.