Why did SEGA of America even go through the trouble of changing it? All of the stage themes went together, and because the Past themes were hardcoded into the game itself, they were left alone while all the other tracks were changes, which must have been jarring for kids when the Past themes sounded nothing like the rest of the music on their respective stages.
But at least the US Boss Theme goes better with that "Fun is Infinite" secret message screen.
"Be good to yourself, because everyone else in the world is probably out to get you."
- Dr. Harleen Quinzel