Utsu-P (鬱P; born December 1, 1990, in Nagoya, Japan) is a Japanese musician whose work spans metal, alternative metal, melodic metalcore, and Vocaloid music. He began playing bass at 13 and formed a four-piece hardcore band at 15. In June 2008 he started producing Vocaloid songs and developed a VOCALOUD style that paired shouts and growls with extremely low-tuned guitars and catchy melodies. He has used VOCALOID voices including 初音ミク, 鏡音リン, and GUMI.
In August 2013 he released his first nationally distributed full album, "悪巫山戯", and "天使だと思っていたのに" became his first song to enter the Vocaloid Hall of Legends. He formed the loud rock band おはようございます in 2015 and began producing the idol group Zsasz in 2019; Zsasz disbanded on November 4, 2023. Outside his Vocaloid work, he performed "Natsu Matsuri (夏祭り)", the ending theme of "Watashi ga Motenai no wa Dou Kangaetemo Omaera ga Warui".