Mellon Collie and the Infinite Sadness

This 1995 double album was a sprawling marriage of alt-kvetching and prog-stargazing – a laser show in a shrink's office. Its audacious scope and emotional wallop allowed seemingly disparate tracks like the delicate miniature "Thirty-Three" and the thrashing "X.Y.U." to seem like natural parts of a whole. The extras on the deluxe box set, particularly the deep-dive instrumentals that flaunt Billy Corgan's guitar prowess ("Fun Time") and cutting-room-floor denizens that reveal pop punch (the sweet, wistful "Pennies"), show how Corgan's mid-Nineties creative peak couldn't even be contained by two CDs.