Ronald Pigpen McKernan, (September 8, 1945 – March 8, 1973), was a founding member of The Grateful Dead. His MANYcontributions to the band included vocals, Hammond organ, harmonica, percussion, and also guitar. In 1994, Pigpen was inducted into the Rock and Roll Hall of Fame, along with all of the other members of the Grateful Dead. See Wikipedia for complete details. Link below. Peace.