James Durbin showed judges, viewers and contestants that his rock 'n' roll truly does come from from the heart on tonight's all-guy episode of 'American Idol,' with a slamdunk performance of Judas Priest, 'You've Got Another Thing Coming' -- which had Steven Tyler screaming expletives.

In the words of Aerosmith rocker judge Steven Tyler, his performance was nothing short of "f---ing crazy good!" Durbin didn't have a shy moment as he took the stage and belted out the Priest hit, which Tyler noted was possibly the first Judas Priest song the 'Idol' stage has ever seen.

Jennifer Lopez chimed in that she loves the way Durbin sings and performs because it's "organic" and "real," and urged the other contestants to follow his lead. Added Randy, "This is, right here, how you do it."

If the fans think Durbin did as well in tonight's performance as we do, he's bound to get voted through.

Watch James Durbin Sing Judas Priest, 'You've Got Another Thing Coming' on 'Idol'