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Hi I made this video to demonstrate that it is possible to have the CT-S1 sound other tones than the default Stage Piano tone using midi. This is accomplished by sending midi program change-messages and bank select-messages. Through sheer experimentation, and because I wanted to get the full potential of this instrument and thus became very stubborn, I learned that if I send a program change-message only and omit the bank select-message I get the GM 1 sound set. To active the the drum sets in the GM 1 sound set it is necessary to send the midi data to channel 10 on the CT-S1 In order to active the built-in 61 tone-bank on the CT-S1, you must send a bank select message (MSB: 2, LSB: 0 or 64 - according to the manual) first, and then the program change-message. The perspective of this is that you can record audio from the CT-S1 and have it sound some of its more advanced tones such as the CZ- and VZ-tones, just by sending the appropriate midi cc messages. I hope this video will inspire others to get the most from their CT-S1 Jay🎹