The 2011 official remaster of Sonic CD is a technical marvel, running on the "Retro Engine." However, due to licensing issues at the time, the developers had to replace certain songs (like the opening and ending themes) and edit others.
You can also download Sonic CD Restored from the official GitHub repository. Here's how: sonic cd restored android download
Use an APK extractor app (e.g., “APK Extractor”) to save com.sega.soniccd.apk to your storage. The 2011 official remaster of Sonic CD is