For the 52nd season of New York’s premier early-music series—Music Before 1800—the incoming artistic director Robby Meese fields a who’s-who of international discoverers and explorers. As the diacritical mark in his series title suggests, there’s a Spanish accent to the proceedings; but it is neglected riches from Latin America that come in for particular attention. The period ensemble Relic leads with The Blood of the Rose (October 4), inspired by La Púrpura de la Rosa, which premiered in Lima in 1701 and is reckoned the New World’s first home-grown opera. De la Vida Deste Mundo (December 13) marks the New York debut of Música Antiqua Latina, a Roman consort dedicated to Italo-Hispanic artists of the Renaissance and Baroque who made their careers in Italy. The Virgin Mary is the focus for ModernMedieval Voices, an offshoot of the fabled Anonymous Four, now disbanded (January 24). Música Temprana, familiar from past seasons, returns with Baroque Song of Latin America (February 21). And let’s not forget concerts by the Helicon Ensemble (Children of Orpheus, November 8), Juilliard 415 (Invention of the Orchestra, April 4), and Paul O’Dette, lutenist extraordinaire (The Knights of the Lute, April 18). The slate of events listed above is set for Corpus Christi Church, 529 West 121st Street. The Boston Camerata’s CANTIGAS: Songs of Mystic Spain—which takes literal and figurative pages from the book of Spain’s 13th-century Alfonso X the Wise (1221–1284), self-styled “King of the Three Religions”—takes place “off campus” at Holy Trinity Lutheran Church, 53 Central Park West. —Matthew Gurewitsch