[Opening Windows], like Hamilton's much-missed weekly visits via the radio, is an entertaining way to spend a few short hours with a doer. There are belly-laugh-meets-terror moments (almost always at Hamilton's expense), such as when he turned pages for Arpad Sandor for an Elisabeth Schwarzkopf recital at Eaton Auditorium and, at one point in the second half, the pages went flying to the stage floor. There are moments that left me stupefied, such as when Hamilton talks himself into conducting a run of Gilbert and Sullivan's HMS Pinafore in Buffalo without ever having conducted an orchestra before.