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After a suggestion from a piano teacher, I have modified the design slightly and enlarged the letter C in the middle. The idea is to make it easier for piano students to identify middle C on the piano during their lessons.
A simple but effective tool for anyone attempting to learn, or teach others, how to play the piano. Rather than taping tiny pieces of paper with the notes onto your piano keys, simply slide this tool into place and remove when not in use. Designed to fit a standard 88 key piano, the product is available in white to ensure it works well with all Black, Grey and Wood-effect pianos and keyboards.