*** Listen now to the show ***

1) It's sold over 25 million copies worldwide making it the largest selling heavy metal album in the world
2) It spent four consecutive weeks at No. 1 in Billboard charts
3) And most importantly, this album single-handedly introduced metal to the mainstream!

If you've not heard it before, read the BBC Music review of the album to find out more about it.

Listen in FULL to the interviews with Lars and James about the album!

Plus check out this exclusive interview with Corey Taylor from Slipknot that we didn't have time to sneak into the show.

Let us know how much you love this album below! Here's the Wordle we made which shows the most popular words used in the text messages you sent into us during the show:

Find out more about the Masterpieces series or tune in from 7pm tomorrow for The Streets 'Original Pirate Material.'

Hello, Huw here, in for Zane tonight on Radio 1 for One Night Only. Tonight, I've made the 'Hottest Record in the World' the 'Coldest Records in the World'. First up, brand new from the XX a b-side to VCR their next single called 'Insects'. My favourite band of '09 do the lushest vocals and the coldest beats to devastating effect. And the second Coldest Record in the World? Little Drummer Boy, in time for Chrsitmas, from Norwegian producer Lindstrum, available as an exclusive bonus with his forthcoming album, and orginally a 40 minute version. Don't worry, this is the four minute version. Nice!

Boom. Pow. Just like that Animal Collective give us more music. A brand new EP. 5 songs. One of which is tonights Hottest Record. Complete with a Grateful Dead sample. Crafty. That and creators of one of, if not THE, album of the year. Metacritic will unveil in good time.

Tonight's Hottest Record is a follow up. Played at the end of show last night, the new Laura Marling is a typically wisened observation set to delicate acoustic instrumentation.
Great reaction from her fans on text. Details about the new album are thin on the ground. But we know it's finished and due out next year

This one should travel. There will a lot of interest in the new Late Of The Pier tune, 'Blueberry'. Which is actually old. Very old according to Sam who also told us that a new album is pending but not impending due to other projects the band are working on. So we have a new Christmas single to tide us over. Good tidings indeed.

Solid Arctics b-side from the Cornerstone single. Pretty freaky. Brilliantly played.

Fyfe Dangerfield returns already with another song from his debut solo album 'Fly Yellow Moon'.
This, by his own admission, is his most pop sounding song on an album said to be fairly spooky in parts. I heard Sly Stone in the first 30 seconds. Apparently, others hear Dolly Parton. Either way this is romance
conveyed believably in tune form.

What a relief for all of us to finally unveil four masterpiece albums. From heavy metal, to street poetry...from punk rock, to French house, this series of masterpiece albums covers a lot of ground, each in their own unique way.

Clear your week, commit to Masterpieces and celebrate great music on Radio 1 and don't forget to leave a comment...

Metallica - 'Metallica'
Read BBC Music's album review

The Streets - 'Original Pirate Material'
Read BBC Music's album review

The Clash - 'London Calling'
Read BBC Music's album review

Daft Punk - 'Discovery'
Read BBC Music's album review

Proper jump up business in the Hot dept tonight. After the reflective 'Horchata', new single 'Cousins' is Vampire Weekend back to their upbeat best. Incredibly immediate and a good showing for their new album 'Contra'.

Ellie Goulding is a brand new artist that has come to our attention via Huw Stephens and Rob Da Bank. With good reason. A great singer songwriter edgy enough to sanction a brilliant remix from up and coming producer / remixer Jackwob. This got an amazing reaction in the Hottest Record dept tonight. Check it out.

Big week for The Maccabees. Announced as the headliner for next years NME Tour and back with a brand new re-working of former single, 'No Kind Words'. With added Roots Manuva we have a new slice of stink called 'Empty Vessels'. As a collaboration it works a treat. Now let's see if he makes out for any of the big shows next year.