Foo Fighers frontman Dave Grohl has written an open letter to Metallica, telling the band to make sure their new album is “kick-ass” before they release it.
Metallica are currently putting the finishing touches to their new as-yet-untitled album, which will be the follow-up to 2003’s ‘St Anger’.
In his letter, which has been circulating across the internet, Grohl reminds the band that he’s “the guy that's been listening to your band faithfully since 1983.”
The band's new album is scheduled for this Autumn.
Metallica are one of the headliners at this years Reading and Leeds Festival – which take place from August 22nd-24th.
Tickets for the festival have already sold out. For more information on all this summer’s festival, check out our new look Festival Guide.
You can read Grohl’s letter in full below:
"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 ****in' minds, because you're ****in' 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?"
Check out exclusive shots of Metallica in the studio below:
You can keep up to date with all the latest news from Gigwise by following us on Twitter and liking us on Facebook.

BBC Denies Burying Jimmy Saville Sex Abuse
Katy Perry Unveils New Single 'Part Of Me' - Listen
Plan B's 'iLL Manors' Movie Labelled As 'Horrific'
Adele Gets Go-Ahead To Perform At Grammy Awards
Dave Grohl 'Honoured' To Be Competing With Adele At Grammy Awards 2012
Foo Fighters' Dave Grohl To Star In TV Comedy
Foo Fighters Unveil 'These Days' Video - Watch
The 15 Best B-Sides Of All Time
M.I.A Demands Women In Burkas: Ridiculous Rock Star Riders!
Dry The River, All The Young Play Manchester Ritz