Trumpet kin are musical instruments that are related to the trumpet. The term includes the CORNET, which is a brass instrument with a conical bore and a cup-shaped mouthpiece, and the BUGLE, which is a brass instrument with a cylindrical bore and no valves. Cornets are similar to trumpets but have a slightly different shape and sound. They also have seven letters in their name. Bugles are simpler than trumpets and cornets, and have five letters in their name.