The most appropriate and professional term to use in a formal paper is "General MIDI Soundfont" or "Sample-based Synthesis Dataset."

End of Service: While the sounds live on in soundfonts, Sega recently delisted the classic version of Sonic CD from several digital storefronts as of May 2025.

Reimagine Songs: Fans use it to cover modern hits (like "I Like to Move It") in the style of Sonic CD.

The most famous aspect of Sonic CD is that it has two completely different soundtracks, representing two distinct soundfont philosophies: