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.
This is not an artist, but appears here due to incorrectly tagged soundtracks. If this non-artist appears in your charts, do last.fm and yourself a favour. Fix your tags by putting the actual artist name in the artist field.
There is more than one artist with this name: 1. LieN（リアン）is Japanese musical project under CyberConnect2 consisting of 三谷朋世 (Tomoyo Mitani) (vocals) and 福田考代 (Chikayo Fukuda) (composition, lyrics and keyboards).