Blue Heron performs Divine songs: Connections and exchanges between secular song and music, featuring the music of Johannes Ockeghem" (c. 1420-1497). Pre-concert talk by musical director Scott Metcalfe at 7:15pm. Reception to follow. Blue Heron is a professional vocal ensemble that combines a commitment to vivid live performance with the study of original source materials and historical performance practice. Blue Heron's principal repertoire interests are fifteenth-century English and Franco-Flemish polyphony, ranging from Dunstable and Du Fay through Ockeghem to Josquin; Spanish music between about 1500 and 1575; and neglected early sixteenth-century English music, especially the rich and unexplored repertory of the Peterhouse partbooks (c. 1540).