Patent ID: 8008569

Claim:
A musical sound generating device equipped with first storage means for storing various data items for use in operations of the musical sound generating device, the various data items including waveform data items each corresponding to one of tone colors of musical sounds, and second storage means accessible faster than the first storage means, the device sounding musical sounds with pitches instructed through operations on musical performance operators by using waveform data items indicating waveforms of the musical sounds stored in the second storage means, the device comprising: a tone color switch for switching tone colors of musical sounds; data transfer means for transferring a data group which is to be transferred in activation of the musical sound generating device, among the various data items stored in the first storage means, to the second storage means, the data transfer means preferentially transferring waveform data items which correspond to predetermined tone colors, among waveform data items of the data group; and limiting means for limiting operations of the musical sound generating device, including invalidating an operation of the tone color switch, during the transfer of the data group by the data transfer means.