In addition to classical and jazz, the Athenaeum supports new, or modern, music. New music refers to chamber music written by 20th century composers. Since 1996 the Athenaeum has worked with San Diego New Music and their resident ensemble, the NOISE Ensemble, to present new music at the library. For ten years, a season called NOISE at the Library was presented. In 2006, the shift was made to presenting a once-a-year festival of music called soundON. soundON is three days of music, including concerts by the NOISE Ensemble, visits by guest composers, open rehearsals, workshops, and a community concert in which anyone, with any level of experience can participate. It is the only festival of its kind in San Diego.