Aco (sometimes written as ACO) is a popular Japanese artist that first debuted in 1995 at the young age of 18. Since her debut, she has been critically acclaimed for her dynamic range of musical experimentation, including R&B, trip hop, downtempo, electronica and straight JPop. Her style has been compared to the influential artist, Chara, Bjork, as well as Bonnie Pink, another popular Japanese musician.