Hairography has always been a tool of the best musical performers (remember the '80s hair-band era). So with the Grammys coming up this Monday, rock-star hair is clearly on our minds. And while we'll never stop gushing over Beyoncé's hair flip and Rihanna's red carpet antics, we can't help but recall the rocker-girl hairstyles of generations past. We're talking Janis Joplin, Nico, and Tina Turner here. Take a walk down memory lane when you keep reading.