Inexpensive and self-adhesive, these reusable key stickers attach to any size keyboard in seconds. This is a great link to a system that has taught millions to play music, turning any keyboard into an easy to play instrument instantly! The package contains 6 stickers each for keys C, D, E, F, G, A, and B. Use as many of them as you need. When you have finished using them, remove them and place them back on the sheet for multiple uses.