Ernest Alexandre Ansermet (11 November 1883 – 20 February 1969) was a Swiss conductor. Ansermet was born in Vevey, Switzerland. Originally he was a mathematics professor, teaching at the University of Lausanne. He began conducting at the Casino in Montreux in 1912, and from 1915 to 1923 was the conductor for Diaghilev's Ballets Russes. Travelling in France for this, he met both Debussy and Ravel, and consulted them on the performance of their works. During World War I, he met Stravinsky, who was exiled in Switzerland and from this meeting began the conductor's lifelong association with Russian music.