I first heard SOL 07 on a Mojo giveaway CD 'In Search of Syd' - being a Krautrock fan I had to buy this album by Wooden Shjips.
I'm surprised nobody has noted the references to mid-period Amon Duul 2 - heavy riffs with long spaced-out improvisations. Listen to Stumbling Over Melted Moonlight and Toxicological Whispering on 'Tanze der Lemminge' or Pale Gallery on 'Yeti'. Yeti: Remastered
Great stuff - I hope they come and perform in the UK one day!