Pearl is the second and final solo studio album by Janis Joplin, released posthumously on Columbia Records, catalogue KC 30322, in January 1971. It was also released simultaneously in a 4 channel Quadraphonic format in the U.S., catalogue number CQ 30322, and in Japan as SOPN 90 and a foil type cover with obi as SOPN 44005. It was the final album with her direct participation, and the only Joplin album recorded with the Full Tilt Boogie Band, her final touring unit. It peaked at number one on the Billboard 200, holding that spot for nine weeks. It has been certified quadruple platinum by the RIAA.