The nature of the Icelandic Mood, she poses, grinning of occasion and with the eyes all mischievous and glistening with the fires of creation, that would make for a much more worthwhile discussion.

Bjork also shows up now and again throughout the reams of astounding live footage Magnússon has strung about the run-time. She appears as the 15-year-old frontwoman for Tappi Takaris in footage taken from vintage punk rock doc Rokk í Reykjavik, whilst more recent material has her stood afore a massive crowd in New York, ripping the very particles out the air by way of a couple face-melting performances.

Further performance footage features Sigur Rós in sublime form in New York, Slowblow afire with violin and accordion abandon, Múm spluttering and glitching in incantatory fashion and a group of young fellas by the name of Nilfisk who appear live for the very first time of all ever as guests of the Foo Fighters, of all people.

When the credits have rolled and all's left onscreen is a message about piracy causes bird-flu, what will most likely hover closest to the corner of the brain related to the remembering of things past, is that those performances were fucking incredible.

For this reason alone Screaming Masterpiece would be essential. It's not as comprehensive as a fella might maybe have liked, and is probably best viewed as an introduction to Icelandic Popular Music, rather than as an All You Need To Know type deal, but it does have a staggering performance of All Is Full Of Love, and it does at least name-check the various elements and influences helped create this most astounding of near-Bohemian musical communities, a community thriving on little else but its own sense of adventure and suspicion of convention.

Line it up for a marathon night's viewing alongside Jason Kulbel and Rob Walters' Saddle Creek documentary, James Szalapski's Heartworn Highways and the first couple instalments of Penelope Spheeris' Decline Of Western Civilisation series. That right there is the basis for a truly brain-frying eve of musical wonder, community values, terrifying hair and shockingly underrated genius.

Thanks, folks.