What makes A Whiter Shade of Pale by Procol Harum notable?

'A Whiter Shade of Pale' remains a seminal track in rock history, topping charts worldwide and influencing countless artists across genres. The song is notable for its rich lyrical content and innovative use of classical influences, which helped pave the way for art rock and progressive rock movements in the 1970s. By 1972, Procol Harum had solidified their place in the rock scene with the 1967 hit 'A Whiter Shade of Pale' marking their breakthrough. This album serves as a retrospective collection, celebrating their early work while showcasing their continued evolution as artists. It reflects a time when they were transitioning from chart-topping hits to more expansive musical explorations.