L' Arianna musicale del Signor Don Persio Della Porta maestro di Cappella della S. Chiesa Metropolitana di Benevento dedicata all'illustrissimo, Reverendissimo Signore, Signore, e Padre Colendiis, il Signore Don Giovanni Denicastro, per il Socii Dom. Ant. Parrino e Michele Luigi Muzio, 1696

Apparently transcribed from the printed work which was published in Benevento in 1696 (one copy recorded by Eitner, who records also a MS copy). The work is a theoretical and practical introduction to Gregorian Chant. The first part uses for demonstration the hymns of the Church,and the second gives examples of chant in choral notation.