The Roland AX-7 Strap On MIDI Controller builds on the legendary AX-1 design. Just strap it on and step to the front of the stage. A host of controllers, including a D-Beam, open the door to dynamic live performance. 7-segment LED display, expanded patch memory, and GM2/GS compatibility make it easy to use. 45-note, velocity-sensitive keyboard. 5 realtime controllers include data entry knob, touch controller, expression bar, hold button, and D-Beam. 128 patches with MIDI data backup. 2 MIDI zones.