 In 1914, Grainger moved to the United States, where he lived for the rest of his life, though he travelled widely in Europe and in Australia. He served briefly as a bandsman in the United States Army during 1917 – 18, and took American citizenship in 1918. After his mother's suicide in 1922 he became increasingly involved in educational work. He also experimented with music machines that he hoped would supersede human interpretation. In the 1930s he set up the Grainger Museum in Melbourne, his birthplace, as a monument to his life and works and as a future research archive. As he grew older he continued to give concerts and to revise and rearrange his own compositions, while writing little new music. After the Second World War, ill health reduced his levels of activity, and he considered his career a failure. He gave his last concert in 1960, less than a year before his death.
