http://www.hollywoodreporter.com/earshot/grammys-katy-perry-lorde-robin-668822

http://www.hollywoodreporter.com/earshot/grammys-katy-perry-lorde-robin-668822
http://www.hollywoodreporter.com/earshot/grammys-katy-perry-lorde-robin-668822
Grammys: Katy Perry, Lorde, Robin Thicke and Chicago to Perform: Metallica also joins the award... http://t.co/8ZzvJRQoMn #music #musica