음악 게임 악기 소리 출처

- 오케스트라 악기: VS Chamber Orchestra: Community Edition (VSCO 2 CE), Versilian Studios — CC0 1.0
  https://github.com/sgossner/VSCO-2-CE
- 피아노: MusyngKite soundfont (midi-js-soundfonts, gleitz) — CC BY-SA 3.0
  https://github.com/gleitz/midi-js-soundfonts
- 홀 울림: Voxengo Free Reverb Impulse Responses "musikvereinsaal" — © Aleksey Vaneev, hall/LICENSE.txt 참고
  https://www.voxengo.com/impulses/