The upcoming ‘American Idol’ season finale promises to be a grand affair, with rock legend Jon Bon Jovi joining as a mentor for the top 12 contestants. This season marks the departure of judge Katy Perry, and rumors suggest Luke Bryan may also be leaving, making the finale a potentially historic event. Despite some controversial eliminations, the season has showcased impressive guest mentors throughout, including Jelly Roll, Tori Kelly, and Gene Simmons. Bon Jovi will provide guidance to the top three contestants on the May 19 episode, following in the footsteps of past mentors such as Ed Sheeran, Nick Jonas, and Sofia Carson.