Well,
as long as the thread is at the gen arr forum, my guess is that it is a new arranger, and the pics show 76 keys.
Looks like it is if look at the buttons at lower row, and if look at sliders at both sides of the screen, it also looks like it may be two sections of players or somehing..... 🤔
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Cheers 🥂
GJ
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"Success is not counted by how high you have climbed
but by how many you brought with you." (Wil Rose)