Procol Harum

Appeared at the Isle of Wight Festival in 1970

Procol Harum are an English rock band, formed in the 1960s, who built an important foundation for what would become progressive rock, or perhaps more closely, symphonic rock.

Procol Harum are best known for their 1967 hit single "A Whiter Shade of Pale", which is not only a regular item on classic singles polls, but is also regarded as being a seminal track in the development of pop music and particularly progressive rock music.