in this drawing you can see various types of trumpets that have been used throughout the ages. Some of the materials that heve been used to constuct trumpets have been the cane plant, horns or tusks of animals, and metals such as bronze, sillver, and brass In shape, the trumpets bagan as a long, hollow straight tube to which a wide-mouthed bell was later added to magnify the sound. Then, as the tubing got longer, it was bent to make the instrument more convenient, first into an S-shape and then into the circling loop of today. To increase the number and accuracy of tones produced, keys and a slide similar to the slide on a trombone were added to the trumpet before the three piston valves of the modern trumpet became the norm