An automatic performance apparatus with the concert magic function includes a memory for storing automatic performance data composed of a sequence of note data. Each note data includes a data of gate time and a data of step time. When it is detected that at least one of the keys corresponding to ...http://www.google.fr/patents/US5760324?utm_source=gb-gplus-shareBrevet US5760324 - Automatic performance device with sound stopping feature
Automatic performance device with sound stopping feature
