The Beneventan apostrophus in south italian notation A. D. 1000–1100
A mysterious note vaguely resembling the apostropha of St Gall is often found in Beneventan manuscripts dating from the first half of the eleventh century. The note is named acuasta in one of the lists of Beneventan neumes. It is found less often in later manuscripts from southern Italy. Its appearance but not its meaning is briefly described under the title ‘strophicus” in volume 15 of Paléeographie Musicale. I have noted hundreds of instances of its use in Beneventan manuscripts from all periods except the last. It is easily mistaken for a sign for liquescence. Sometimes it is indeed thus used in the late gradual Benevento, Biblioteca Capitolare, MS VI. 35; but earlier it is so often employed for open syllables and simple vowels not subject to liquescence that a liquescent interpretation, even as a partial explanation for its early use, must be given up.