If you are serious about playing in tune and in time, the Center Pitch CP10 is for you. The CP10 attaches easily, firmly and safely to any brass, woodwind and bowed stringed instrument, and is perfect for noisy rehearsal or practice rooms because it "feels" the vibrations and only responds to the instrument in contact with it. Center Pitch is responsive over the entire note range at all dynamic levels, can be set to display notes enharmonically sharp or flat, and transposed for instruments between concert pitch and B-flat, E-flat, F or G.