an Entity references as follows:
Joan Peyser (June 12, 1930 – April 24, 2011) was an American musicologist and writer, particularly known for her writing on 20th-century music and for her biographies of George Gershwin, Pierre Boulez and Leonard Bernstein. Her biography of Bernstein was, according to Leon Botstein, the first attempt at a critical account of his life and work.