Whistling competitionsOne of the most well known whistling competitions is the International Whistlers Convention (IWC). Since 1973, this annual event takes place in Louisburg, North Carolina. The awards go to whistlers ranging from international male and female, teenage male and female, and even grandchildren. It has been customary for the Governor of the State of North Carolina to sign a declaration declaring the week of the IWC as "Happy Whistlers Week," for citizens and visitors to honor the art of whistling and to participate in the scheduled events.
http://en.m.wikipedia.org/wiki/WhistlingSelamat bersiul siul