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Amazon.com: M-Audio Oxygen 49 (MKV) – 49 Key USB MIDI Keyboard Controller With Beat Pads, Smart Chord & Scale Modes, Arpeggiator and Software Suite Included: Musical Instruments
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Amazon.com: M Audio Oxygen 49 IV | 49 Key USB/MIDI Keyboard With 8 Trigger Pads & ChromaCast CC-KSTAND Double Braced X-Style Pro Series Keyboard Stand with Locking Straps: Musical Instruments
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