The Society of Women Musicians was a British group founded in 1911 for mutual cooperation between women composers and performers, in response to the limited professional opportunities for women musicians at the time. The founders included Katharine Emily Eggar, a composer, Marion Scott, a musicologist, and Gertrude Eaton, a singer. 37 women came to the first meeting, held on 11 July 1911 at the Women's Institute, 92 Victoria Street, including Rebecca Helferich Clarke, Alma Haas, and Liza Lehmann, who later became the group's first president.