The document describes several ancient musical instruments including the aulos, a Greek wind instrument; the lyre, a string instrument used in Greek antiquity; and the cornetto, an ancestor of the trumpet made from wood or animal horns. It also mentions plucked string instruments like the lute and theorbo as well as brass instruments like the natural trumpet without valves, and keyboard instruments such as the harpsichord. Additionally, it provides brief descriptions of woodwind instruments like the shawm, serpent, and natural horn as well as bowed string instruments including the viola da braccio and viola da gamba.