Foo Fighters' Dave Grohl has posted an open letter urging metal overlords Metallica to make a "kick-ass" album.
Metallica are in the process of finishing off their new collection, the somewhat belated follow-up to 2003's 'St Anger'.
In the letter Grohl, a longtime fan of the trash metal pioneers, declares his love of the band and even admits his fondness of the disappointing 'St Anger' album.
He writes: "Hey, it's Dave! Remember me? Yeah, I'm the guy that's been listening to your band faithfully since 1983. I bought your first album 'Kill 'Em All' from a mail order catalogue called Under The Rainbow, I think. Actually I can't remember. It was 1983 for Christsakes! But that album changed my life and I've been listening to your albums ever since (even 'St Anger'!).
"I can't wait to hear the new shit, and no matter what you guys do I'll always be first one at the shop waiting to hear it. I'm sure you'll come out and blow everybody's fuckin' minds, because you're fuckin' METALLICA!
"Good luck. And don't release it until it's kick-ass.
"Yours, Dave Grohl.
"P.S. Are you finished recording the drums yet?"
Metallica's new and untitled album set for an autumn release.