Ives's First Symphony is an attractive, conservative piece with a gorgeous slow movement based on a hymn tune and a finale that sounds strangely like early Bruckner. The Fourth, on the other hand, is arguably his masterpiece, and one of the most radical compositions in the history of music. Scored for a huge orchestra with three solo pianos, chorus, offstage and onstage instruments, and "everything but the kitchen sink" percussion, it requires at least two conductors to keep it all coordinated. Listening to it--despite the commotion in the second movement--is a positively transcendental experience, and the finale resolves itself into one of the most beautiful moments in American music. These performances are smashing (and crashing, where necessary!). --David Hurwitz