First footage I've seen of this amazing Swedish psych powerhouse, a group that was founded around 1967 by Pärson Sound/Träd, Gräs och Stenar's Bo Anders Persson. Johan Kugelberg's recent Swedish Underground exhibit at the Kasher Gallery in Soho brought a lot of photo images of this era to life, and the sound of these three bands has had a big impact on me through the years so the new visuals are very welcome. It makes perfect sense that Persson started Parson Sound (which morphed into International Harvester upon opening for a Swedish Doors gig) after experiencing Terry Riley's residency in Sweden; the heavy trance element, flowing ethno-vibe and rock-riffery heaviness are well documented on the Silence label's Sov Gott Rose Marie reissue (still in print). It's a monster. Seeing TGoS some years ago at Tonic was also transcendent, despite the fact members were getting into their 70's (via Exdoomorbedoomed's YT page).