Their sound has been described as raw, psych rock jam, by the writer David Pescovitz, who also notes the band would invite their audiences to improvise and collaborate.
[2] Inspired by the minimalist music of Terry Riley, the plan explored drones, heavy repetition and use of tape loops.
In August 1968 the band changed their name to "International Harvester" and later the same year their debut album Sov gott Rose-Marie was released.
[4][5] 1970 saw the release of their self-titled debut Träd, Gräs & Stenar, sometimes called "the green album", which included cover versions of Bob Dylan's "All Along the Watchtower" and The Rolling Stones' hit song "(I Can't Get No) Satisfaction".
Träd, Gräs & Stenar, then consisting of Bo Anders Persson, Torbjörn Abelli, Thomas Mera Gartz, and Jakob Sjöholm, toured the United States in 2004 and 2005.