Project: whistle!

Whistling sounds so fun, but I don’t know how to do that…I always wanted to learn whistling, but I fail almost every single time. Why don’t we ‘whistle’ in another way?

https://editor.p5js.org/DingYuke-haha/sketches/lO54_3qQO

https://www.youtube.com/watch?v=s3-TXR0mPQA