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Amazon.com: Xkey Air 37 Bluetooth MIDI keyboard controller - Ultra low latency, Apple-style ultra-thin aluminum frame, 37 full-size velocity-sensitive keys, polyphonic aftertouch, for iPad, iPhone, Mac : Everything Else
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Amazon.com: Xkey Air 25 Bluetooth MIDI keyboard controller - Ultra low latency, Apple-style ultra-thin aluminum frame, 25 full-size velocity-sensitive keys, polyphonic aftertouch, for iPad, iPhone, Mac : Everything Else
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