With 11 gold and five platinum albums, this progressive-rock group ruled the Billboard charts while blurring genre lines between hard rock and blues.

• Co-founder and flautist Ian Anderson was known for his wild antics on stage, as well as continually reinventing the group’s sound every few years.
• Having sold more than 60 million albums, the group released 8 that peaked in the Top 10 on the pop charts, including two back-to-back No. 1s—Thick as a Brick (1972) and A Passion Play (1973).

• Popular progressive rock band, Procol Harum, sold a million albums in 1967 featuring their debut song "A Whiter Shade of Pale", topping the UK Singles chart for 6 weeks and becoming Britain¹s most-heard song in public places over the last 75 years.