Sometimes stars emerge. Sometimes stars are thrust upon us. And sometimes stars simply slip into the atmosphere as if propelled by something otherworldly. It is into this last category that the astonishing presence, voice, look and feel of Lana Del Rey falls. Musical stardom is not an option with Ms Del Rey. It is her vocation. She calls herself the `gangsta Nancy Sinatra' and defines her genre as `Hollywood pop\u002F sadcore', a dramatic new loop for pop music.