| 摘要 |
A sequence of first, second and third overlay segments that are initially lightly adhered to the white keys of a replica of a piano keyboard defined on a backing strip. The first, second and third overlay segments are subsequently removed from the backing strip and adhered to the white keys of a piano keyboard. The first and second overlay segments when mounted on the white keys of a piano keyboard visually define a treble signature and a bass signature. Elongate tabs extend from the first and second overlay segments and visually indicate to a user the keys on the keyboard that correspond to notes on the lines of the upper and lower groups thereof on the music. The third overlay identifies the middle C key on the piano keyboard. Overlay segments in the form of sharps and flats are provided that are secured to appropriate white keys of the keyboard to visually indicate that they are to be sharped or flatted. Notes in spaces on the music between lines in the upper and lower groups are identified on the piano keyboard as being between an appropriate two of the tabs.
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