The women of San Pedro’s own Zhena Folk Chorus offer the haunting sound of Bulgarian folk singing, marked by jagged rhythms, unusual harmonies, and the odd, riveting beauty of a musical tradition at the crossroads of many cultures.  Gorgeously costumed, they perform songs of celebration, love, and longing, sacred and profane, marking the daily and seasonal round of work and play, sweeping listeners from fields ripening in the sun to windswept coastlines.  The Philippine Chamber Singers bring their gift for intriguing interpretations and striking arrangements to sacred songs and other folk material from the Philippines and beyond.  Capella Gloriana is an ensemble of superb singers devoted to a repertoire that extends from Renaissance to contemporary music.  Stephen Sturk conducts Capella Gloriana in a program of American sacred music from the eighteenth to twentieth centuries, including one of his own compositions, to cap an afternoon celebrating the glory of massed human voices united in sacred song.