The Bagpipes originated sometime in the late medieval times and have become Scotland's national instrument. They are blown by mouth with the bags traditionally being made from the skin of a sheep and the pipes from bone or ivory. In modern times synthetic materials are the norm for the bags and hardwood, often African Blackwood, for the pipes. The melody is played on a reeded chanter leading down from the bag while three drone pipes sit on the piper's shoulder and provide a constant noise as a background to the melody.
Read more about the bagpipes over at LinkedIn here.