Antonio "Zacara" da Teramo (in Latin Antonius Berardi Andree de Teramo, also Zacar, Zaccara, Zacharie, Zachara, and Çacharius; c.1350/1360 – between May 19, 1413 and mid-September 1416) was an Italian composer, singer, and papal secretary of the late Trecento and early 15th century. He was one of the most active Italian composers around 1400, and his style bridged the periods of the Trecento, ars subtilior, and beginnings of the musical Renaissance.Medieval Italy: an encyclopedia Volume 1 – Page 65 Christopher Kleinhenz – 2004 "Antonio Zacara da Teramo (died c. 1413–1415), who lived in Rome from at least 1390 to 1407, served as papal singer and scribe under popes Boniface IX, Innocent VII, and Gregory XII and was maestro di cappella in the chapel of the antipope John XXIII in 1412-141."
