The Yamaha MFC10 MIDI Foot Controller lets you control MIDI guitar synthesizer systems, keyboards, samplers, tone generators, effects devices, sequencers and rhythm machines by foot - freeing your hands, head and heart to concentrate on your best music performance. As you play your instruments, just step on a foot switch to transmit program change, control change, note on/off or other types of MIDI data stored in the MFC10`s internal memory to any number of connected MIDI devices.