In 1967, Procol Harum released one of the few singles to sell 10 million copies worldwide: “A Whiter Shade of Pale.” The members who recorded the №5 hit — Gary Brooker (vocals and piano), Matthew Fisher (Hammond M-102 organ), David Knights (bass), Ray Royer (guitar), and session drummer Bill Eyden (later replaced by Bobby Harrison) — had an important “sixth member”: lyricist Keith Reid.