Prog Rock

Progressive rock is a broad genre of rock music that primarily developed in the United Kingdom through the mid- to late 1960s, peaking in the early-to-mid-1970s. Initially termed "progressive pop", the style emerged from psychedelic bands who abandoned standard pop or rock traditions in favour of instrumental and compositional techniques more commonly associated with jazz, folk, or classical music, while retaining the instrumentation typical of rock music. Additional elements contributed to its

https://en.wikipedia.org/wiki/Progressive%20rock