Clarinets are available numerous sizes, with different pitch ranges. Though there are greater than a dozen alternative modern clarinet types, the commonest ones used in orchestras and bands are the B flat and A clarinets. The bass clarinet, which is much bigger than the average and has an upwardly curved bell, also is commonly used in modern bands and orchestras. The common clarinet consists of five parts—the mouthpiece, the barrel or tuning socket, the higher or lefthand joint, lower or right hand joint, and the bell. A thin, flattened, particularly shaped piece of cane called a reed must be inserted in the mouthpiece before the instrument can be played. Different notes are produced as the player moves his palms over metal keys which open and shut air holes in the clarinet's body. An device similar to the clarinet—a cylindrical cane tube played with a cane reed—was in use in Egypt as early as 3000 b. c. Instruments of this sort were used around the Near East into modern times, and other clarinet prototypes were played in Spain, parts of Eastern Europe, and in Sardinia. A folk tool found in Wales in the course of the eighteenth century, called the hompipe or pibgorn, was very similar to Greek and Middle Eastern cane single reed instruments, but it was made of bone or of elder wood. Through the Middle Ages and up to the seventeenth century such single reed contraptions were played across Europe, but they were almost solely peasant or folk devices.