MidiKeys For Mac

MidiKeys shows a little keyboard on screen, and you can use the computer keyboard to play MIDI notes.

The keys on the row above are flats (black keys), and the octave below is on the row starting with 'q' (and the digit row is that octave's flats).You can select a MIDI source and see incoming notes played on the keyboard.

You can use the computer keyboard to play MIDI notes, or click on the keys with the mouse.

The keys 'z' through ',' is the octave starting a middle C (note 60)In order to hear a sound when you press keys, you need to connect the MidiKeys output to a synthesizer of some sort. This can be either a softsynth like SimpleSynth or a hardware synth connected through a MIDI I/O box. MidiKeys has no way to produce sound on its own.