How to achieve vibrato on a flute?
Vibrato is usually done in one of two different ways – with the throat or with the stomach. The best way to start is by holding a note and pulsing the air in quarter notes by pushing the air with your stomach. Once you’ve got that, try eighth notes and then sixteenth notes. It takes a lot of practice and it might seem difficult at first, but one day you’ll notice that it will just click and you won’t even have to think about it anymore. Good luck!