The 100th anniversary of the birth of John Cage was celebrated in Pasadena, California at the Boston Court Performing Arts Center with a concert by Gloria Cheng titled Two Sides of Cage’s Coin. The Boston Court venue is comfortably cozy and all but a few of the 100 seats were filled to hear Water Music and the entire sequence of Sonatas and Interludes. Despite the modern industrial construction of the hall – it has corrugated steel walls – and a play going on in the adjacent theater, the acoustics proved more than adequate for the intimate space. John Cage was