Ron Mckernan
A member of The Grateful Dead from 1965 until his death in 1972. He is most commonly referred to as "Pigpen". He was the heaviest blues influence in the band. He played the organ and the harmonica while also singing lead in many songs such as Turn on Your Lovelight, Easy Wind, Operator, Hard to Handle, and more.
"Pigpen? Oh you mean Ron Mckernan, the Grateful Dead member. Not the peanut."