A designation for an instrument, known only from a stage direction in Peri’s Euridice (Florence, 1600): ‘Tirsi Viene in scena sonando la presente Zinfonia con un Triflauto, e canta la seguente stanza’. The score at this point comprises a ritornello on three staves, all with soprano clefs. The top two parts (e′–e′′) are written predominantly in parallel thirds, while the lowest is a drone alternating between only four notes....