The studio chatter, alternate takes, and leftover tracks that make up this two-disc expanded edition of Janis Joplin's last album (released three months after her death in October 1970) don't reveal anything new about the rock icon. Except that she nailed every song gathered here. Despite her wild and boozy reputation, Joplin was a total pro in the studio. The Pearl Sessions proves as much in previously unreleased versions of "Move Over," "Me and Bobby McGee," and "Cry Baby" — delivered with the same room-rattling force found on the original album, which is included here. But unless you're so into Joplin's legacy that you need to hear five different versions of "Get It While You Can," there's probably no reason to sit through all this. — Gallucci