This allows you to customize the results music for whenever you complete a stage. Choose from a variety from results music from the past Sonic games, and even some Sega related ones too.
This is possible through HedgeModManager's Configure mod option. You are able to change the results music for both Modern Sonic and Classic Sonic.
Additionally, you can make the mod always play the S-Rank music or never play it, alongside the option for if you only want to hear the Round Clear.