Percy Aldridge Grainger (born George Percy Grainger; 8 July 1882 – 20 February 1961) was an Australian-born composer, arranger and pianist who lived in the United States from 1914 and became an American citizen in 1918. In the course of a long and innovative career he played a prominent role in the revival of interest in British folk music in the early years of the 20th century. Although much of his work was experimental and unusual, the piece with which he is most generally associated is his piano arrangement of the folk-dance tune "Country Gardens".Grainger left Australia at the age of 13 to attend the Hoch Conservatory in Frankfurt. Between 1901 and 1914 he was based in London, where he established himself first as a society pianist and later as a concert performer, composer and collector of original folk melodies. As his reputation grew he met many of the significant figures in European music, forming important friendships with Frederick Delius and Edvard Grieg. He became a champion of Nordic music and culture, his enthusiasm for which he often expressed in private letters, sometimes in crudely racial or anti-Semitic terms.