Ernest Alexandre Ansermet was a Swiss conductor.
In 1918, Ansermet founded his own orchestra, the Orchestre de la Suisse Romande (OSR). He toured widely in Europe and America and became famous for accurate performances of difficult modern music, making first recordings of works such as Stravinsky's Capriccio with the composer as soloist. Also, Ansermet was one of the first in the field of classical music to take jazz seriously, and in 1919 he wrote an article praising Sidney Bechet.
In his last years, he and his ensemble surprised many by issuing discs devoted to Haydn, Beethoven and Brahms. These performances were not at all conventionally Germanic, and were much criticized at the time of their appearance, but during recent years their vivacity has come to be appreciated more.