"Special Stage (US) (Beta Mix) - Sonic CD" was a high quality rip of the beta mix of the US region variant of "Special Stage" from Sonic CD. It was never reuploaded to SiIvaGunner following the GiIvaSunner Termination, but was included as a track on CD Grand Beta in September 2016.
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This is a Sega Genesis arrangement of the advertised track.