We can think of world-leading Australians in sport (Don Bradman), media ownership (Rupert Murdoch) and film (Nicole Kidman). In music, some great performers come to mind, especially female singers (Nellie Melba, Joan Sutherland). But how many people can even name an Australian composer? In his Gresham Lecture, Malcolm Gillies probes this elusive category of greatness. Percy Grainger is often mentioned as a contender. But, despite his birth, was he really Australian, was he primarily a composer, and what was so great about him, anyway?