Download Kingdom Hearts Simple & Clean And Sanctuary Remixes And Extras soundtracks to your PC in MP3 format. Free Kingdom Hearts. "Hikari" (Japanese: 光, "light") is a song recorded by Japanese–American recording artist Utada To promote the international formats of Kingdom Hearts, Utada re-recorded an English language version entitled "Simple & Clean". .. The original edit and PlanitB remix of "Simple & Clean" first appeared on Utada's single. Simple And Clean -PLANITb Remix- This song is by Utada Hikaru and appears on the video game soundtrack Kingdom Hearts () by Yoko Shimomura.