Judas Priest lead singer Rob Halford recently spoke to Revolver Magazine and reflected his thoughts and feelings about late Motörhead icon Lemmy Kilmister and his talent as a lead vocalist.

Judas Priest and Motörhead performed countless concerts and tours together as a part of different events, festivals, and promotions for more than forty years. Thus, the bands’ frontmen, Rob Halford and Lemmy Kilmister found a time to get to know each other better and became friends.

Halford is one of Kilmister’s closest friends who received his ashes in a bullet after the musician passed away because of prostate cancer, cardiac arrhythmia, and congestive heart failure on December 28, 2015. The singer never forgot to pay tribute and praise Kilmister.

In one of them, he named Motörhead’s ‘Ace of Spades’ as his 10 favorite songs of all time. During his recent interview, Halford also emphasized that Kilmister had an unmatchable voice and ‘perfect match’ for the band’s sounds. He added that Motörhead wouldn’t be as successful as they were without the late musician.

Halford said in his interview that:

There’s no other voice like Lemmy’s. There never will be. His voice was the perfect match for the sound that Motörhead made. If they’d had a different singer, it wouldn’t have been Motörhead. So that characteristic of him is remarkable, and that is part of the overall makeup that people think about with Motörhead. It’s what makes his role in the band so special.”

You can listen to the song below.