The American Idol Season 21 finale, happening on Sunday, May 21, will feature a star-studded cast.

Keith Urban will return to the show to mentor the Top 3 finalists and as well take the stage to perform.  Fellow country stars Jelly Roll, Lainey Wilson, and Luke Bryan will also take the stage during the finale.

According to Deadline, Season 2 stars Clay Aiken and Ruben Studdard, Ellie Goulding, James Blunt, Jazmine Sullivan, Kevin Cronin from REO Speedwagon, Kylie Minogue, Lauren Daigle, Pitbull, TLC, and more will all appear during the Season 21 finale.

The three-hour finale episode will be broadcasted live nationwide from 8 p.m. ET/5 p.m. PT.