16, Enescu presented in Paris his first mature work, Poema Română, played by the Colonne Orchestra, then one of the most prestigious in the world, and conducted by Édouard Colonne. Many of Enescu's works were influenced by Romanian folk music, his most popular compositions being the two Romanian Rhapsodies (1901–02), the opera Œdipe (1936), and the suites for orchestra. He also wrote five mature symphonies (two of them unfinished), a symphonic poem Vox maris, and much chamber music (three sonatas for violin and piano, two for cello and piano, a piano trio, two string quartets and two piano quartets, a wind decet (French, "dixtuor"), an octet for strings, a piano quintet, and a chamber symphony for twelve solo instruments). A young Ravi Shankar recalled in the 1960s how Enescu, who had developed a deep interest in Oriental music, rehearsed with Shankar's brother Uday Shankar and his musicians. Around the same time, Enescu took the young Yehudi Menuhin to the Colonial Exhibition in Paris, where he introduced him to the Gamelan Orchestra from Indonesia. On 8 January 1923 he made his American debut as a conductor in a concert given by the Philadelphia Orchestra at Carnegie Hall in New York City, and subsequently visited the United States many times. It was in America, in the 1920s, that Enescu was first persuaded to make recordings as a violinist. He also appeared as a conductor with many American orchestras and, in 1936, was one of the candidates considered to replace Arturo Toscanini as permanent conductor of the New York Philharmonic. In 1932, Enescu was elected a titular member of the Romanian Academy. In 1935, he conducted the Orchestre Symphonique de Paris and Yehudi Menuhin (who had been his pupil for several years starting in 1927) in Mozart's Violin Concerto No. 3 in G major. He also conducted the New York Philharmonic between 1937 and 1938. In 1939, he married Maria Tescanu Rosetti (known as Princess Maruca Cantacuzino through her first husband Mihail Cantacuzino), a good friend of Queen Marie of Romania. He was also renowned as a violin teacher. He began teaching at the Mannes School of Music in 1948. His students included Yehudi Menuhin, Christian Ferras, Ivry Gitlis, Arthur Grumiaux, Serge Blanc, Ida Haendel, Uto Ughi, and Joan Field. He promoted contemporary Romanian music, playing works of Constantin Silvestri, Mihail Jora, Jonel Perlea and Marţian Negrea. Enescu considered Bach's Sonatas and Partitas