This is piano.
There are two rows to allow you to play with both hands.
I made the application assuming that the app play with Surface Pro.
*I don’t recommend playing with iPhone due to playback sound delay in iOS.
You can download from below:
https://1drv.ms/u/s!Ah9ZcqsjtlBrk2qxfxe_-YBUbA1Z?e=kgBF1b
[movie]
Play Music (with @artbreak_taichi) in Power Platform Day Winter '19 in Japan ( Photographer : Mr. Dang )
[material]
I use the free piano sound file obtained from the website below (University of Iowa Electronic Music Studios).
http://theremin.music.uiowa.edu/MISpiano.html
Play fun!!