The former first lady revealed she is not immune to getting starstruck.
Twelve former queens from the Drag Race extended universe will return to battle for the crown.
The series is being developed by Paramount+.
The '80s power ballad featured special guest Jude Keyz on the keyboard.
He performed the song for the first time during Metro Boomin's Coachella set April 14.
"Yes! Katy got booed," cheered co-judge Luke Bryan.
"Musical Stairs" features artists performing their latest hits in the Tonight Show stairwell, backed by The Roots.
The film will document The Judds singer's tour following the death of her mother Naomi Judd.
The fest takes place from June 7-18 and will feature 109 films.
The Broadway legend also received an ominous note from the Phantom of the Opera during the interview.
