The MIDI connections of a MIDI-compatible device. A Multiport, in the context of a MIDI Interface, is a device with multiple MIDI output sockets, each capable of carrying data relating to a different set of 16 MIDI channels. Multiports are the only means of exceeding the limitations imposed by 16 MIDI channels.

The MIDI connector used to send data from a master device to the MIDI In of a connected slave device.

The Message sent when key is released.

The MIDI message sent when note is played (key pressed).

Every key on a MIDI keyboard has its own note number ranging from 0 to 127, where 60 represents middle C. Some systems use C3 as middle C while others use C4.

MIDI information can be interpreted by the receiving MIDI instrument in a number of ways, the most common being polyphonically on a single MIDI channel (Poly-Omni Off mode). Omni mode enables a MIDI Instrument to play all incoming data regardless of channel.

A MIDI Sound Source capable of producing several different sounds at the same time and controlled on different MIDI channels.

A sound generating device with no integral keyboard.

A device or sequencer function that enables two or more streams of MIDI data to be combined.

The socket used to receive information from a master controller or from the MIDI Thru socket of a slave unit.