From show-stopping vocals to emotional standing ovations, BET’s Lifetime Achievement tributes have always been iconic.

From Cher in Mamma Mia! Here We Go Again to Snoop Dogg in Pitch Perfect 2, today we're celebrating the musical legends that have taken their musical chops to the big screen!

Usher and James Brown bust out a medley of their hits "Caught Up" and "Sex Machine" at the 2005 GRAMMYs.

Are you ready for some old-time rock and roll?! Then you are ready for the masters, the originators, the men who made the music, the "Legends of Rock 'n' Roll Live."