<P>PROBLEM TO BE SOLVED: To easily enjoy a musical instrument by facilitating performance and to seize a clue to training in such an electronic musical instrument as determines pitches of musical sound generation according to a combination of operations of two or more operators like wind instruments like a trumpet or the like. <P>SOLUTION: Voice and breath are input from a mouth input part 20. Automatic performance data are pre-stored inside. The melody pitch data of the automatic performance data are read out step by step for automatic performance. A sound pitch candidate is extracted on the basis of a valve state signal formed automatically from the melody pitch data, and the pitch is determined from the voice pitch and the pitch candidate from the mouth input part 20. The above step-by-step reading is performed at the timing when the determined pitch is in agreement with the melody data. The performance is made to go on even by only mouth ingoing. <P>COPYRIGHT: (C)2005,JPO&NCIPI 
MUSICAL INSTRUMENT