PostClassical Ensemble shows a new side of Lou Harrison

Lou Harrison was a wonderful 20th-century composer who has not gotten the same attention as an innovator as his friends John Cage and Henry Cowell. The PostClassical Ensemble has been trying to rectify that. In 2011, it gave a Harrison festival, and on Saturday night the ensemble returned with a one-night tribute that included a major work, the "Grand Duo for Violin and Piano"; several other worthwhile pieces; and a gamelan ensemble for good measure.