Soyo Oka and Taro Bando are both former employees at Nintendo. They worked collaboratively on Super Mario Kart. Soyo Oka wrote the game's music, while Taro Bando handled sound effects and implementation.
Ichiro Shimakura (嶋倉一朗) composed the music to the Game Boy Pokémon Trading Card Games. And Mario Party 3, apparently. A high-quality rip of the Pokémon Card GB 2 soundtrack can be downloaded from here. (details here)
“Super Mario Kart” is not an artist. The tracks in this game were composed by Soyo Oka and Taro Bando (Soyo Oka, Taro Bando). If this non-artist appears in your charts, do last.fm and yourself a favor.