多重未来のカルテット～QUARTET THEME～ (Tajuu Mirai no Quartet ~QUARTET THEME~)

Background
"Tajuu Mirai no Quartet" is a vocal remix by Kusemono of the theme song from the 1986 arcade game "Quartet" also produced by SEGA. It is featured in the game Project DIVA Arcade and in the albums GetReady and 初音ミク -Project DIVA Arcade- Original Song Collection Vol.2.