Artists like Daevid Allen

Henry Cow were an English experimental rock group, founded at the University of Cambridge in 1968 by multi-instrumentalists Fred Frith and Tim Hodgkinson. Henry Cow's personnel fluctuated over their decade together; alongside Frith and Hodgkinson, however, drummer Chris Cutler, bassist John Greaves, and bassoonist/oboist Lindsay Cooper were important long-term members.

Eloy is a German rock band. Founded in 1969 by guitarist Frank Bornemann, the band is best known for their progressive rock music.

The United States of America was an American psychedelic rock band founded in Los Angeles in 1967 by composer Joseph Byrd and vocalist Dorothy Moskowitz, with electric violinist Gordon Marron, bassist Rand Forbes and drummer Craig Woodson. Their 1968 self-titled album, often cited as an early showcase for the use of electronic devices in rock music, was met with critical acclaim and minor chart success. They disbanded shortly after its release.