Procol Harum

Procol Harum is a British rock band formed in London, England, in 1967. They contributed to the development of progressive rock, and by extension, symphonic rock. The band's claim to fame is 'A Whiter Shade of Pale', a huge hit in 1967. The band differed from most of the progressive rock bands of the 70s in the relatively prominent blues component to their sound, largely due to the voice and piano of leader Gary Brooker. In the early years, Matthew Fisher's organ and Robin Trower's guitar combined for a unique sound. In October 2012, the band was nominated for induction into the Rock and Roll Hall of Fame, but were unsuccessful as they failed to gain enough votes.

Procol Harum is arguably the most successful "accidental" group creation -- that is, a band originally assembled to take advantage of the success of a record created in the studio -- in the history of progressive rock. With "A Whiter Shade of Pale" a monster hit right out of the box, the band evolved from a studio ensemble into a successful live act, their music built around an eclectic mix of blues-based rock riffs and grand classical themes. With singer/pianist Gary Brooker and lyricist Keith Reid providing the band's entire repertory, their music evolved in decidedly linear fashion, the only major surprises coming from the periodic lineup changes that added a new instrumental voice to the proceedings. At their most accessible, as on "A Whiter Shade of Pale" and "Conquistador," they were one of the most popular of progressive rock bands, their singles outselling all rivals, and their most ambitious album tracks still have a strong following.