Software to Perform MIDI Files in Real Time

I've almost finished some software that is quite useful with MuseScore. It allows you to load a midi file and interactively play in real time with a midi controller. It's like an instrument that never plays wrong notes but that lets you add your own expression in real time. It started out as a fun research project but it's turned out to be very useful, and fun to play.

I call it Concert Keyboardist:

https://www.youtube.com/watch?v=xb66fzwdDS4

This example is Mendelssohn opus. 30 no. 1. The score was created by loading into Concert Keyboardist a midi file downloaded from the Internet. Notice the increased expressiveness vs the normal playback of a midi file.

This is how Concert Keyboardist works:
- Playing ANY note on the midi controller triggers the next note(s) from the midi file.
- Notice I alternate between playing just two different notes on the controller.
- Note on/off times and velocities from the controller are merged with note pitches from the midi file.
- The scrolling piano roll shows already played, currently sounding and upcoming notes
- Varying your playing tempo automatically adjusts the scrolling rate of the note display

I haven't decided yet whether to do the extra work to make it available to the public. Is it something you would find useful?

- Chris Graham