It 's Copland-on-Hudson Time for Bard '' Copland and His World , '' this year 's Bard Music Festival devoted to the music of Aaron Copland , runs Aug. 12 through Aug. 14 , and Aug. 19 through Aug. 21 , at Bard College , Annandale-on-Hudson , N.Y. A third weekend of Copland music is planned for Oct. 21 through Oct. 23 .