Judas Priest frontman Rob Halford has revealed the best piece of advice he’s ever received was from Kiss‘ Gene Simmons.Speaking in a new interview, Halford talked about the wisdom he’s collected over the years, including the time Simmons offered him some gems about the music industry.“We have a great friendship with Gene [Simmons] and Paul [Stanley] from Kiss,” Halford told Twisted Sister‘s Jay Jay French on The French Connection podcast.