the American dream is for you. Erik Madigan Heck for The New York Times Erik Madigan Heck for The New York Times THE MUSIC ISSUE THE MUSIC ISSUE Cecile McLorin Savant: James McMurtry: `Copper The Trolley Song' Canteen' By MARGO JEFFERS( By RUTI I GRAI IAN! The counter-diva who brings a comedian's timing The d