Alongside her comrades in arms Crosby, Stills, Nash, and Young, Joni Mitchell defined the Laurel Canyon singer/songwriter sound. But Joni's emotional intimacy and restless spirit didn't just speak to sensitive types cradling acoustic guitars. Prince declared himself an enormous fan in the '80s, and more recently, artists ranging from Sonic Youth and Liz Phair to Feist and Taylor Swift have paid homage.