Attendees at this year’s Monster Mash in Tempe, Ariz., were in for a real treat as renowned progressive rock band Tool had a headlining slot at the festival.

Tool Performs “No Quarter” Dressed As Led Zeppelin

The prog-rock giants were set to perform their only show of 2015 that happened to fall on the night of Halloween. To celebrate, the band dusted off their rendition of the classic song “No Quarter” by Led Zeppelin to start the set and the band to be dressed as the legendary rock quartet. Lead singer Maynard James Keeenan came out with long hair and an open-buttoned shirt like Robert Plant and the rest of the band spawning outfits like the original Led Zeppelin members. After, they would go on to play their classic hit “The Grudge,” a song they have not played since 1998.

The band has not released an album since 2006’s 10,000 Days, and fans have been yearning for an album ever since. But Keenan told Rolling Stone about a possible Tool record saying, “They’re working hard in their own way; I’m working hard in my own way, and I’ve got nothin’ for ya.”

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