| 摘要 |
PURPOSE: To make instruction of key touch in a manner easily understandable to a player even if plural keyboards must be simultaneously pressed like chords. CONSTITUTION: Playing information is previously read out of a storage means 3 for the playing information and the key touch instruction is simultaneously made by making decision that the keys must be simultaneously decided if there are plural keyboards to be touched within the prescribed time. A key touch indicator lamp 8 corresponding to the key 7 to be first touched obtd. by previous reading is kept to light continuously. The lamp 8 is changed from a lighting state to a flickering state at the timing to touch the key 7 corresponding to the lamp 8. Simultaneously, the indicator lamp 8 corresponding to the key 7 to be pushed next is lighted. The sequence of the key touches may be any sequence at the time fo simultaneously instructing the key touches of plural pieces of the keys 7. The corresponding lamp 8 is put out when touching the key 7 instructed to be touched and the corresponding lamp 8 is changed to the flickering state in the case of the timing to push the lighted key 7 and simultaneously the corresponding lamp 8 of the key 7 to be touched next is lighted. Henceforce, the similar processing is repeated. |
