The common whistle is the typical whistle you hear used in everyday life, which is created by breathing a focused stream of air through a circular gap between your lips.
How it's done
- Make sure your lips are moist
- Say the word "who" and leave your lips in that position with a circular gap
- Blow out a steady stream of air through that gap.
- Try to think of a certain note in your head and replicate it!
