| 摘要 |
A system for instruction in the operation of a keyboard controlled instrument includes means for playback of synchronized prerecorded instructional programs including audio instructions and pictorial representations of the proper position of an operator's fingers when carrying out the audio instructions. In alternative embodiments, the pictorial representation is presented either proximate to the respective keys or is projected directly upon the key surface, but in either instance the position of the pictorially represented keys corresponds to that of the actual keys of the keyboard. The effect of the pictorial representation may be reinforced by additional indicators in the form of lights associated with the individual keys and projected thereon.
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