"Pearl," Janis Joplin's final album, will finally get the expanded-reissue treatment on April 17th. "The Pearl Sessions" will include the original mono versions of the album's singles as well as newly discovered alternate versions and outtakes. Also include is a live recording from Janis' 1970 Summer tour that marked her first public performances with The Full Tilt Boogie Band, which she then used to record "Pearl." The previously unknown audio tapes from "Pearl" sessions produced by Paul Rothschild came to light as research was being done on Rothschild's Doors catalog.