LEA MICHELE Glee fans’ favorite leading lady tries on a new role: pop star     For more than four years, millions of Americans watched Lea Michele belt out a broad range of hits on TV’s Glee. On her debut solo album, Louder, she shifts effortlessly between luxurious ballads and uptempo numbers that showcase her vocal and songwriting talent. The Emmy-nominated actress and singer tapped a stable of hit collaborators including Christina Perri,...