A definition of Progressive Rock Music
Progressive rock (often shortened to prog or prog rock) is a form of
rock music that evolved in the late 1960s and early 1970s as part of a
"mostly British attempt to elevate rock music to new levels of artistic
credibility." The term "art rock" is often used interchangeably with
"progressive rock", but while there are crossovers between the two
genres, they are not identical.
Progressive rock bands...
