Wikipedia
Soulhead
Soulhead (known as SOULHEAD in Japan) is a Japanese urban contemporary/ R&B duo consisting of sisters Yoshika Sawayama (よしか) and Tsugumi Sawayama (つぐみ). Both were born in Hokkaidō; Yoshika was born on July 20, 1978 and Tsugumi was born on January 25, 1981. Since their debut, they have worked with several well-known artists, including Sowelu, Koda Kumi, Crystal Kay and Ken Hirai.
Soulhead (album)
Soulhead (stylized as SOULHEAD) is the first self-titled album by Soulhead. It is their first album under the Avex label, having previously been under Sony Music Entertainment Japan's sub-label onenation. It became their second lowest charting album, only reaching #40 on Oricon and staying on the charts for four weeks.