Me, a compilation CD I've just made of several different versions of Gong's Master Builder/The Glorious Om Riff.
The Glorious Om Riff started as a mostly instrumental/wordless vocal piece on Gong's "You" LP (the third part of their Radio Gnome Trilogy), and is a riff based on two notes, lasting 4 bars - I think, with a shifting time signature. Steve Hillage (Gong's guitarist) did a version of it on one of his LPs ("Green"), I think, and then the thing spread throughout the Gong universe.
The most extensive version is by the Acid Mothers' Temple, and it lasts 51 minutes. That sounds as though it would be excessive, but it isn't: there's nothing there that shouldn't be.
This is the original:
This is the Acid Mothers version, if you have an hour to spare (you need to get a cup of tea and things before you start):
After quite a lot of Bowie (live in 1972 and 1983 - 9 years, but the difference is astonishing (the 72 is better)) and a bit of Mozart (the last two symphonies), I'm back onto The Glorious Om Riff, and starting to get a bit punch drunk.
The second cd of a 12 cd set of Bowie's singles (which I am in the process of burning - up to cd 4 now). The second cd is the Ziggy era: I am on the song Ziggy Stardust as I type: next up is the German edit of Drive In Saturday (I don't think he sings it in German though, as he did with "Heroes" - no he doesn't).
The Complete Brass Monkey (as far as 1993 goes anyway). A group formed by Martin Carthy, John Kirkpatrick and the Brass section from out of The Albion band. A reet good bollocking racket they make as well.
The 4th disc of a 12 cd fan set of all of Bowie's singles, called Fifty-Two Years: The Complete Singles: this is from the Young Americans, Station to Station period. (If anyone would like a copy of this, Pm me for the link. It's bloody good.)
A bootleg of the three-piece Van der Graaf Generator playing in Poland in April 2007. Hammill's just announced that they're not going to play "Killer". They start with "Childlike Faith in Childhood's End", a 15 minute song about the death of "mere humans", after which "Life will start."