Paul Di'Anno made this comparison in an interview, "My voice is actually getting better. I'm hitting notes Rob Halford can't hit any more - and the reason is I don't fuss over it."

Asked if he's still able to pull out all the stops on tour, Halford tells 99.1 WPLR (via Blabbermouth): "I am. I love it so much and I'm just so stoked by standing on stage, 40 years later, still screaming my head off and having the time of my life."