Pianist, composer, and writer on music, born in Eton, Berkshire, S England, UK. He studied at Oxford, and in 1914 became professor of music at Edinburgh, where he built up the Reid Symphony Orchestra. He composed an opera, The Bride of Dionysus (1907--8), a symphony, piano concerto and cello concertos, and chamber music. His fame rests largely on his writings, notably Companion to the Art of Fugue (1931), Essays on Musical Analysis (1935--9), and his articles on music in the Encyclopaedia Britannica. He was knighted in 1935.