Conch shells are sometimes made into crude bugles by removing the small tip of the shell to form a mouthpiece. Such instruments are used in the Pacific Islands as well as in many parts of Asia. While lacking the range capabilities and tonal quality of brass instruments, the conch shell is still an interesting instrument to play. As it has no mouthpiece or valves, the embouchure in shell playing is critical. Most shells will only naturally play one note, but with pitch manipulations, multiple sounds can be achieved. The insertion of the hand and the placement of the fingers will also change the pitch of the shell. The conch shell is said to be the musical instrument of mermaids and mermen. Steve Turre is the leading innovator of the shell. It is sometimes found in classical works, such as the symphony piece "La Noche de Los Mayas", or "Night of the Mayas", which was premiered in 1939 with Jacob Watkins on percussion and conch.