In 1920, radical young composers calling themselves “Les Six” banded together in Paris. Rebelling against “outmoded” Wagnerism and Impressionism, Georges Auric, Louis Durey, Arthur Honegger, Darius Milhaud, Francis Poulenc and Germaine Tailleferre — and their pals Erik Satie, Jean Cocteau and other obstreperous visionaries — produced works designed to meet the challenge of Milhaud: “The indifference of the public is what’s depressing. Enthusiasm, or vehement protest, shows that your work really lives.” This week, in conjunction with the art exhibition “The Société Anonyme: Modernism for America,” UCLA presents a concert of works by Les Six et ses amis organized by Neal Stulberg, visiting director of orchestral studies, that includes a screening of René Clair’s celebrated experimental silent film Entr’acte, with live music composed by Satie. At the Hammer Museum, 10899 Wilshire Blvd., Wstwd.; Sat., May 20, 6 p.m.; free. (310) 443-7000 or www.hammer.ucla.edu.