Music of the United Kingdom (1970s) - Wikipedia
https://en.wikipedia.org/wiki/Music_of_the_United_Kingdom_(1970s)Progressive or prog rock developed out of late 1960s blues-rock and psychedelic rock. Dominated by British bands it was part of an attempt to elevate rock music to new levels of artistic credibility. Progressive rock bands attempted to push the technical and compositional boundaries of rock by going beyond the standard verse-chorus-based song structures. The arrangements often incorporated elements drawn from classical, jazz, and world music. Instrumentalswere common, …