Two ways of how to open a MIDI file with Synthesia and how to work with - YouTube
How to Edit MIDI in Pro Tools | Sweetwater
What are the free alternatives for Synthesia (looking for something that will allow me to upload a .MIDI file, and learn both hands separately)? - Quora
VMPK. Virtual MIDI Piano Keyboard
How To Load MIDI Files Into FL Studio (2 Ways) [Tutorial] - Myloops