Tails Doll...

The Tails Doll is one of six unlockable characters in 1997’s Sonic R first released for the Sega Saturn console, and later re-released on PC and as part of Sonic Gems Collection for the Nintendo GameCube in 2005.

Often while playing as the Tails Doll, the song Can You Feel the Sunshine? plays over and over continuously, regardless of what race track one is playing on. In addition to the creepy soundtrack, the doll limply levitates through the tracks.