Sir Arnold Edward Trevor Bax, KCVO (8 November 1883-3 October 1953), was an English composer and poet. His musical style blended elements of Romanticism and Impressionism, always with a strong Celtic influence. His orchestral scores are noted for their complexity and colourful instrumentation. Bax-s poetry and stories, which he wrote under the pseudonym of Dermot O-Byrne, reflect his profound affinity with Irish poet William Butler Yeats and are largely written in the tradition of the Irish Literary Revival