Howard Goodall's Choir Works and Choirs Perform

British composer Howard Goodall is your guide for these two programs about communities and their relationship to choral music. In "Choir Works," you'll see how important a role mass singing plays in evoking a community's identity; in "Choirs Perform," seven of the world's finest ensembles perform works illuminating their diverse traditions. 145 min. total. Soundtrack: English.