Best jazz albums of 2015: Joyful music from Mahanthappa, Cohen and more

The inventiveness of today's jazz musicians -- young and old -- never ceases to amaze. This year's best jazz recordings prove the point: Rudresh Mahanthappa, "Bird Calls" (ACT): Sooner or later, anyone who plays alto saxophone must come to terms with the genius of Charlie Parker, but altoist Mahanthappa...