Procol Harum

Wikipedia - "Procol Harum are a British rock band, formed in the 1960s, who contributed to the development of progressive rock, and by extension, symphonic rock. Their best-known recording is their 1967 single 'A Whiter Shade of Pale.'"
Wikipedia, Google, last.fm, metrolyrics, YouTube, (1), (2), (3), (4), (5), (6), (7), videos