"Bonus Stage (Genesis) - Sonic 3D Blast" is a high quality rip of "Bonus Stage (Genesis)" from Sonic 3D Blast.
At 0:02, the melody changes into the tune of "Escape from the City" from Sonic Adventure 2. At 0:15, the melody then changes into the tune of the overworld theme from Super Mario World. At 0:28 to 0:39, it changes to "Player Select" from Super Mario Bros. 2.
The rip loops at 0:51.