DATEKEN is a skilled Kagamine composer. He has released original music and arrangement CDs before, but didn't start creating Vocaloid songs until October 2008. He finally gained popularity with the song "Tsumugi Uta" in February 2009. His later work "Jutenija" earned him the "Legendary Kagamine Master" title on Nico Nico Douga, also "Legendary RIN Master" from his song "trick art" and several others.