👉 Dactyls are a type of musical notation system used in classical music. They are often used to represent the notes on a piano, and they consist of ten lines, each containing three notes. The first line contains the major third (m3), the second contains the minor third (m4), the third contains the fifth (f5), and so on. Dactyl notation is often used in orchestral music to represent the notes that are played by a soloist or ensemble.