In order to keep it varied I’ve imposed a rule that no artist may appear more than once in the top 10.

• 10: Nightwish - Dark Passion Play
  There are so many female-fronted symphonic metal bands coming from various parts of Europe that it’s very difficult to single out just one. Finland’s Nightwish throw choirs, orchestras, Uilleann pipes and kitchen sinks into a gloriously over-the-top album mixing metal and opera with a touch of celtic folk, with new singer Anette Olzon adding a touch of warmth to lead vocals that’s missing from some bands in the genre.

• 9: The Pineapple Thief – Tightly Unwound
  The Pineapple Thief describle themselves as ‘indie prog’, whatever that’s supposed to mean.  Some sonic similarities with pre-Kid A Radiohead, but with more traditional style rock vocals, and a extremely strong sense of melody, which is what makes this album stand out.

• 8:  The Mars Volta – Deloused in the Comatorium
  After a string of disappointing albums over the past few years it’s easy to forget just how great their incendiary debut was. What’s been described as a mix of speed-metal and free jazz somehow combines the raw energy of punk with the complexity and technical skill of progressive rock.  It’s all completely bonkers, but in a good way.

• 7:  Breathing Space – Below the Radar
  The York band really come of age with their third album. They may have dropped the jazzier elements of their sound in favour of a harder rock edge, but they still find room for some atmospheric ballads and big soaring epics which showcase Olivia Sparnenn’s amazing voice.  Iain Jennings production job gives the lie to the idea that you need a major-label budget to come up with a great-sounding album.
  

• 6: Porcupine Tree – In Absentia
  It’s difficult to choose a single Porcupine Tree album out of several great ones they’ve recorded over the past decade. Indeed, with the possible exception of 2005′s slight misstep of Deadwing, all their albums in the noughties have been classics. If the 90s charted their progress from ambient Floydian soundscapes to a more song-orientated approach, 2002′s In Absentia saw them add some metal to the mix.  The combination of some Zeppelineque riffing and some darkly ambiguous lyrics may have lost them some older fans, but introduced them to a younger audience of metal fans.

• 5 Karnataka – Strange Behaviour
  Some may say including a live album in the decade’s top ten may be cheating, but this is my blog, where I make up the rules. Strange Behaviour caught the atmospheric celtic-tinged prog outfit  just when they seemed poised for a major breakthrough, the live dynamics making the songs far more powerful than the studio recordings.  Sadly this double album turned out to their magnificent swansong, and the band were to implode shortly after it’s release.

• 4 Marillion – Marbles
  Marillion are a rare example of a veteran act who can still make great new  music more than two decades into their career. Their output in the noughties may have been uneven, but this double album shows the Steve Hogarth incarnation of the band at their best; a hugely varied work which goes from experiments with drum loops and dub rhythms to huge soaring epics filled with Steve Rothery’s trademark sustain-drenched guitar. Ignore the single-disk retail edition; you need the double album available only from the band’s website.

• 3 Fish – 13th Star
  Marillion’s former frontman’s career seemed to be petering out by the middle of the decade after a couple of disappointingly weak albums.  But he bounced back very strongly indeed with this one.  Musically it’s far removed from the ornate neo-prog of 80′s Marillion, a mix of metallic grooves and heart-on-sleeve ballads, lyrically it’s just about the most intense and emotionally charged thing he’s even done.

• 2 Opeth – Blackwater Park
  Sweden’s Opeth combine death metal with 70′s style pastoral prog-rock to produce the perfect antidote to anyone who thinks heavy metal hasn’t progressed since Toni Iommi started playing tritones through a fuzzbox way back in 1970.  Blackwater Park, produced by Porcupine Tree’s Steve Wilson, marks the point where they established their signature sound, Mikael Ã…kerfeldt switching back and forth between ‘Cookie Monster’ and ‘clean’ vocals, and the music switching back and forth between dense swirling heavyness and reflective acoustic passages. Metal has never quite been the same since.

• 1 Mostly Autumn – The Last Bright Light
  As I said at the very beginning, this is a personal list. And this is the album which has changed my life more than any of the preceding ones. This was very much the coming-of-age album for York’s finest progressive rock band, and marked the high point of their celtic-prog phase of their career, full of soaring and emotionally powerful epics making use of flutes and even crumhorns alongside traditional rock instruments. Although they subsequently moved to the more polished commercial sound of the follow-up Passengers, even now their live sets still draw heavily from this album.

There are plenty of other great albums just outside the top 10; Therion’s totally bonkers choral metal Gothic Kabbalah, Muse’s recent The Resistance, IQ’s neo-prog masterpiece Frequency, Pure Reason Revolution’s hypnotically captivating The Dark Third, either of The Reasoning’s two albums, and Dream Theater’s recent return to form Black Clouds and Silver Linings.