Ernest Alexandre Ansermet (November 11, 1883 – February 20, 1969) was a Swiss conductor. Ansermet was born in Vevey, Switzerland. Although he was a contemporary of Wilhelm Furtwängler and Otto Klemperer, Ansermet represents in most ways a very different tradition and approach from those two musicians. 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.