Celebrities perform alongside top 24 on 'American Idol' for all-star duets round Joss Stone, Brian McKnight, Ben Rector and Jimmie Allen share what sage advice they gave their mentees.

Katy Perry called Brianna "a walking miracle." "You give people hope, and people need a lot of hope right now," Perry said. All 3 judges said yes to a ticket to Hollywood.

It's once again the time of year when the search for the next "American Idol" begins, and the quest is coming to Iowa next week. The show, which in 2022 will be marking its 20th season and fifth ...