19人の様々な音MAD作家が集まり、72時間（三晚）以内にまとめるというチャレンジのもとで行われた合作

• メドレー: sm40194094

i didnt notice it was taken down [original description] 19 various authors have come together and made a collaboration that was done under the challenge of organizing it under 72 hours this time! (3 nights) • Spreadsheet: https://docs.google(dot)com/spreadsheets/d/1T7hg6uLA0NsbMYDfFlZ68ArnBLj13ADxZFzh4-762lU