Accompanied by longtime musical director Wally Harper, Barbara Cook performed a memorable evening of songs by the great Stephen Sondheim mixed with songs Sondheim has said he wished he had written. MOSTLY SONDHEIM featured Miss Cook along with Wally Harper on piano and Jon Burr on Bass, performing an evening of songs by composer/lyricist Stephen Sondheim, as well as songs by such composers and lyricists as Harold Arlen & E.Y. Harburg, Cy Coleman & Dorothy Fields, Jerry Bock & Sheldon Harnick and Irving Berlin.