here you can try my online webgl flight sim (nothing to download)
arrows : turn pageup/pagedown : motor
with this you can listen to a song with the chords of an other or saved/loaded data or create chord data with the automatic learn function (play to chord). works with the midi input too (ex: usb midi keyboard or external midi player like midi_chung). No musical notation knowledge required , is based on tune independent notes sequences detection and chord memory .
( auto adds chords to a monophonic melody )