// Play two notes at once based on the cursor position

midi.FirstNote = mouse.x * 127
midi.SecondNote = mouse.y * 127

// note that notes are numbered from 0 to 127
// with 0 being the low C note in octave 0
// and 127 being the high G note in octave 10
// each octave has 12 notes (octaves never have 8 notes)
// C, C#, D, D#, E, F, F#, G, G#, A, A#, B
// Middle C is note 60
// set it to -1 to not play any note