Soundtrack songs
Can You Feel The Sunshine ACID Mix: Unlock Super Sonic in Sonic R
Living in the City LTN Mix: Start Sonic R ten times (entering and exiting the game also works)
Sonic 6290 Mix and Sonic Boom D'mb Mix: Start Sonic CD five times (entering and exiting the game also works)
Sonic After 6290 Mix: Start Sonic CD ten times (entering and exiting the game also works)