Over the Rainbow exploded into worldwide fame upon its performance by Judy Garland in the MGM film musical The Wizard of Oz (1939). Voted the greatest song of the twentieth century in a 2000 survey, it is a masterful, delicate balance of sophistication and child-like simplicity in which composer Harold Arlen and lyricist E. Y. "Yip" Harburg poignantly captured the hope and anxiety harbored by Dorothy's character. In Arlen and Harburg's Over...