Example 9. Togni, Sei Notturni, V, facsimile of sketch for mm. 1–12, numbering in square brackets added ([a]–[c] mark the list of the three parameters “rhythmic unit,” duration, dynamics, and [1]–[4] the four statements of the series) (Fondo Camillo Togni, Fondazione Giorgio Cini, Venice; reprinted by permission)