Berardi, Angelo, a chapel-master at Spoletto, published at Bologna, in 1687, "Documenti Armonici," containing the rules of counter-point ; in 1689, "Miscellanea Musicale;" in 1690, "Arcani Musicali;" and in 169:3, "Il Perch Musicale." Berardi's works were a high authority in music at the time he wrote. Many of his precepts are arranged and given by Choron in his great work on composition.