Amazon.com: IK Multimedia iRig Keys I/O 25-keys Midi Controller with 24-bit up to 96kHz Audio Interface for iPhone/iPad, Android and Mac/PC : Everything Else
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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MIDI keyboard – using a real instrument with iPad - TapSmart
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