In a recent chat with Matt Mills on the Heavy Stories podcast, Mille Petrozza opened up about an almost-career-defining moment: being invited to join Swiss extreme metal innovators Celtic Frost back in 1986.

Mille was blown away by the invitation and explained that his loyalty to his own fledgling band was a major factor in declining the offer.

However, he went on to describe the experience of rehearsing with Celtic Frost as both awe-inspiring and formative.

The rehearsals took place in an old World War II bunker in Zurich, where Petrozza spent a week jamming with the legendary drummer Reed St.

Mark and other members of the band.

Despite being tempted by the opportunity, Petrozza ultimately chose to stick with his own band Kreator.

Petrozza remains proud of forging his own path and cementing his place in thrash metal history.

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