Hello !
I put together a package for more music.
Install BASSMIDI. This takes control of the windows midi and any sound samples can be assigned.
Windows uses gm.dlst by default, but it is very poor quality.
Assign to BASSMIDI: GeneralUser GS FluidSynth v1.44.sf2 and SGM-v2.01-CompactGrand-Guit-Bass-v2.7.sf2 sound important.
From here, you can use the BASSMIDI configuration interface to set the primary sound pattern in windows. All windows midi applications will use it.
When you start the piano program, it will use the default sound patterns.
Have fun !
https://drive.google.com/file/d/1MmT0UPqB7x0zynOQ8BQawnmBbsDN5D1B/view?usp=sharing