Did you ever dream of playing the Master System version of Sonic 1 with FM music?

Features:

• FM music using the YM2413 chip (PSG music can be toggled at the title screen by pressing the Pause button)
• sound effects are still using the PSG, so they won’t interrupt the music
• a sound driver with many changes, including new commands, less per-channel RAM usage and FM support
• an improved sound format that’s about 20-30% smaller (all the additional code and music data fits within the 16 KB ROM bank used by the sound driver)
• many easter eggs (i.e. hidden songs)
• a few bug fixes to existing songs

• Sonic The Hedgehog (USA, Europe).sms
• MD5: DC13A61EAFE75C13C15B5ECE419AC57B
• SHA-1: 6B9677E4A9ABB37765D6DB4658F4324251807E07