Best to break out the bongs for this one, as it comes shrouded in smokey melodies and unhurried, mellowed-out charm. Time slips away as it folds into your ears, proving Opeth can master pretty much any genre they try.

Trading in speed for a moment of majesty, Opeth were quick to prove that extreme music need not follow as set of rules to achieve its objectives. Advent is a disarming, breathtaking treat.

That said, Opeth have always been more than capable of bringing the noise when they needed to. April Etheral kicks off with a riff unleashed from Hell, it seems, and doesn’t let up until the listener’s ears are bludgeoned into oblivion.

A crowd-pleasing live favourite, this is possibly the most crushing song Opeth have recorded to date and it wastes no time laying, er, waste to all before it. Not so much a nod to where they come from, more a full on headbang.

The high point from Orchid, this 13-minute epic is a strong statement of intent from an ambitious young band, to the point where you can forgive their ideas temporarily outstripping their ability. A sign of great things to come.

It spirals through all their influences, it seems, and capably sums up the band’s appeal: no-one else music that sounds like this, quite simply. It’s never been more fun to ride the sonic waves with them.

Another slower, quieter number, all Opeth arguably did with this is highlight their strengths rippling beneath the surface. Still, just because it doesn’t explode into life like other numbers, it doesn’t make it unimpressive.

With a video shot by Lasse Hoile, famed for his work with a clutch of other big name prog bands, Porcelain Heart is the lead-off moment from their latest album that packs a punch and a few surprises.

Sounding like a night in the fog in the middle of nowhere, this unbelievably heavy number shows that Opeth have none of their bite as they continue to develop into more dexterous songwriters with numerous influences.

The title might sound like a twist no-one wants their love life to take, this is actually a typical set opener chosen because it highlights the light and dark strengths of Åkerfeldt and co.

Fans were so eager to hear new material this year that various low-quality bootleg vids of live performances made it up onto YouTube. When the epic grandeur of the likes of The Lotus Eater finally arrived, it was clear why they wanted an early listen.

A great example of how Opeth can write songs that are fantastically structured but still not alienating or self indulgent. It starts quietly, as you might expect, then bursts into life with colour and sound.

It's quite astonishing how much power Opeth can get out of gentle acoustic melodies. It won't crush you like their heavier moments, but it'll weigh your jaw down til it smacks on the floor.

A beguiling mix of prog rock and death metal and just the kind of headspinning experience we’ve been led to expect by Mikael Åkerfeldt at his genre-blitzing finest. After an atmospheric intro, then comes the annihilating riffs. Nice.