NitroFont is a hobbyist, high-quality soundfont initially released on August 14, 2025, on the Polyphone website (https://www.polyphone.io/en). I had a dream of creating a high-quality soundfont since at least 2022, but my soundfont creation skills were so-so back then. However, given that I can actually create good-sounding soundfonts, I was able to make my soundfont go public.
You're free to suggest additions or changes to the soundfont, or you can report an issue here.
NitroFont is available under the terms of the Creative Commons Attribution-ShareAlike 4.0 International license. See https://creativecommons.org/licenses/by-sa/4.0/ for more information.