25 Notes Full Chromatic Xylophone Glockenspiel with plastic case its great instrument for any child. Chromatic instrument, that means you can play virtually any song you want. Its like a piano or keyboard, with black and white keys. The color keys are the white keys on the piano, and the second set of metal keys are the "black" keys on the piano. It has 15 color keys or "white" keys and 10 blue or "Black" keys.