Wikipedia
YMCK
YMCK is a Japanese chiptune band, composed of Midori Kurihara (vocals), Takeshi Yokemura (music, lyrics, arrangement), and Tomoyuki Nakamura (composition, music video).
Their work has not been confined to Japan, having released albums in Korea, Thailand and the United States as well as appearing at various events around East Asia and Europe.
YMCK's name is derived from the CMYK subtractive color model.