Crystal Bowersox doesn't have to go any further than her own life to find songwriting narratives these days.  A contestant on Season 10 of American Idol, the Ohio native's rootsy, untamed takes on tunes like "Me and Bobby McGee" and "Pieces of My Heart" fused with an infectious sardonic sensibility, Crystal inspires parallels to everyone from Ani DiFranco to Sheryl Crow to Janis Joplin.