This weekend over 130,000 revelers will invade Worthy Farm in the British town of Pilton for the enormous Glastonbury festival.

Organisers polarised the audience when they announced that metal titans Metallica will headline the event for the very first time.

To celebrate the band's appearance we've uncovered some peculiar radio from almost 20 years ago. The band's frontman James Hetfield and former bassist Jason Newsted came into triple j in 1996 when the band were promoting their Load album and premiered the first single, 'Until It Sleeps'.

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Appearing on the Request Fest program with Michael Tunn, the band answered half an hour of calls from swooning fans who were beside themselves to have the chance to speak to their metal heroes.

Listen to ten minutes of callers praising Metallica, hating on "teenyboppers" and even a couple of backhanded compliments about their new material. It takes more than a bad song for a Metallica fan to lose their devotion.

"I'm one of your most dedicated fans, and there are a lot of guys out there like me," one caller, Todd, said. "I was a little bit disappointed in the song, it wasn't quite what I was expecting. But if you guys are going to make a change, then me as a loyal fan, I'm prepared to make that change too and adopt to your new style of music."

"Don't change for us man," Hetfield says. "Change for yourself."

Hetfield will no doubt be passing along plenty more gems of wisdom just like that at Glastonbury this weekend.

The J Files is your ticket to music discovery, and before it kicks off in August we're asking you: what artist or band should we feature? Tell us now.