The iConnectivity Mio is a MIDI interface with 1 MIDI input and 1 MIDI output. You connect the interface via the USB connection with your computer or laptop. Send MIDI data from your DAW or recording software to your equipment. Write a melody or rhythm in a MIDI track on a computer and send the MIDI data to the MIDI instrument. The recording software also receives MIDI data. Do you adjust a parameter of a MIDI instrument while recording a MIDI track? Then this is recorded in the recording of the MIDI track.