Whistling is the production of sound by means of carefully controlling a stream of air flowing through a small hole. This can be achieved by creating a small opening with one's lips and then blowing or sucking air through the hole. Some people love to whistle while others don't. They spent time honing whistled versions of their favorite songs. Some people whistling in public while walking.

Whistling is a fun thing to do. It is considered to be on a par with humming or singing and is thought to be a type of musical expression by a lot of people.

Christopher Ullman believes whistling is an art form. He is a four-time national and international whistling champion who loves to mimic different instruments or add embellishments to the song while using his lips, tongue, and teeth.

To learn the proper techniques of whistling, you better watch the amazing video below.