“Rae Imamura, a pianist and music educator with an abiding passion for new and experimental music, died of cancer Saturday at her home in Berkeley. She was 63. For decades, Ms. Imamura was a devoted advocate for the works of living composers, including John Cage, Robert Ashley, Lou Harrison, Terry Riley, John Adams and Paul Dresher. Her collaborators also included jazz luminaries such as Ornette Coleman and the Art Ensemble of Chicago.”