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Amazon.com: Vangoa MIDI Keyboard Controller 25 Keys, Worlde Panda MINI USB Midi Keyboard with Drum Pads, Beat Maker Machine Pad, Black : Everything Else
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Amazon.com: AKAI Professional MPK Mini Play – USB MIDI Keyboard Controller With a Built in Speaker, 25 mini Keys, Drum Pads and 128 Instrument Sounds : Everything Else
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The MIDI Standard: Introduction to MIDI and Computer Music: Center for Electronic and Computer Music: Jacobs School of Music
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