YMCK was formed in May 2003 when Midori joined Yokemura and Nakamura. They soon released their first work; a CD-R containing 6 tracks.
In 2004, YMCK appeared at Microdisko in Stockholm, Sweden. In the same year they released their first full album, "Family Music".
In 2005, YMCK made another appearance outside of Japan, this time at the FORMOZ FESTIVAL in Taipei, Taiwan and at the FAT FESTIVAL in Bangkok, Thailand. They also released their second full album, "FAMILY RACING".
In 2006, they returned to Taiwan to appear at the FORMOZ FESTIVAL for the second time.
In January 2009, they appeared in Sweden once again, and this time at UppCon in Uppsala.
In January 2009, they played in the opening ceremonies for Katsucon 15 in Arlington Virginia (DC).
In 2009, YMCK remixed the #1 hit song Days by Japanese mega-star Ayumi Hamasaki.
In 2009, YMCK released their third album "FAMILY GENESIS", made available for the first time on the iTunes store in the U.S.A.
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