A whistle note, also known as a whistle register, is a vocal technique that produces a high-pitched sound beyond the typical vocal range. It is characterized by a clear, piercing tone that resembles a whistle or a bird’s call.
Achieving a whistle note requires precise control of the vocal cords and breath support. It is a challenging technique that can take time and practice to master. However, it can greatly enhance a singer’s range and expressiveness.