John Lennon and Paul McCartney turned themselves into the most influential composers of the late twentieth century. Their music wasn’t just immensely popular. It also proved that traditional western harmony – the main building block of European music – still had plenty to offer. They, more than anyone, saved the western musical tradition from extinction, and gave it a new purpose and a direction.

Cole Porter was the most gifted of a richly talented generation of composers who transformed popular music in the 1920s and 30s. It had started the century, for the most part, bland, patronising and trite, the gauche, poor relation of classical music. Cole Porter, more than anyone, made it musically, and lyrically sophisticated, emotionally satisfying and subtle. Remarkably, not only did he write some of the best music ever, but was also one of the greatest lyricists in the English language.

Leonard Bernstein was the composer who, more than anyone else in the twentieth century, embodied the trend we now call ‘cross-over.’ A brilliant musician and conductor, he wrote in the ‘classical’ style, but also wrote some of the best known ‘popular’ music of the century, from On The Town to West Side Story. By his own mixing of European classical, pop and Latin styles, Bernstein may have prefigured the next important phase in the music of our own time – the fusion of Western and Asian styles.