This double CD epic slice of Six Organ of Admittance grandness, RTZ, is named after the button on a Tascam 484 that "returns to zero". This suggests that we're looking backwards, rather than forwards here. It squeezes together several lesser-known pieces from Six Organs early years into a colossal arc of drone influenced folk that might test the patience of even the most hardened fan. I'm not sure I can delve into the guts of which track did what to whom and when... there's plenty of explanation on the website. I'm just going to concentrate on the music.As a collection of old material, this doesn't really sit squarely on the back catalog front. Previous album, Shelter from the Ash, was a slow burning, less experimental offering that saw Ben Chasny embrace more of the work seen on his side projects like Comets on Fire. What I can say though, is that both The Sun Awakens and School of the Flower are some of the best free, experimental alt-folk recordings you can buy. Wondrous slices of music that flirt with dozens of genres, never quite finding a perfect home, but wooing you with each step that it took.Where their previous work has seen them embrace the more folk and rhythmic side of life, the collection of music that forms RTZ is completely disconnected and abstract. There's SPACE at work here. Sounds floating around a goldfish bowl of dust. Which I guess makes sense. The individual "movements" here have been forced together, sequenced to try and flow, but in a way that isn't entirely natural.After persevering with the opening 'Resurrection', 18 minutes of not very much, you'll be thankful for the rather upbeat 'Warm Earth, Which I've Been Told'. The semi-religious chanting floats over a nicely twisted guitar line which sounds sharp and focused through the blanket of vocals and resonating chords. This shifts into a pure organ, simple chords played over the sound of sharpening guitar strings and bricks before returning to it's opening theme of simplicity.'Punish The Chasms With Wings' is the central movement, and epic brilliance, of the record. Exploring the edges of drone, it's heavily influenced by the desert sand and far eastern sounds. The name of the track actually sounds like music itself. It opens with swirling, dusty speckles of noise as a far away echo of piano twinkles like the first rays of sun light. Out of nowhere comes this crackling noise of guitars; one acoustic, one electric. Dueling for space, the feedback of the electric peeling off the face of the twitching strings of the acoustic. This is great, charged stuff. It's just a shame that the music around this, book-ending RTZ as a whole, is a bit of a slog.The three pieces that make up 'Nightly Trembling' are slow, medieval influenced ramblings. Filled with monk chants, jarring acoustic guitars and the sound of ghostly voices coming out of the gloom. Unfortunately, the gloom is just a little too, well, gloomy. At least the three tracks become shorter over the central arc - the first piece clocks in at a sweltering 18 minutes.Perhaps, now that Chasny has got this out of this system, he can work on something altogether different and have a fresh start. Cast off the shackles and embrace the influences and ideals that initially made him one of the most experimental and challenging performers that I've had the good fortune to find. RTZ acts as a nice compilation, but it's best avoided by newcomers and embraced by completists only. 68%Six Organs Of Admittance on MySpace