Kelvin Mercer

Kelvin Mercer, born on August 17, 1969, in The Bronx, is a composer, record producer, musician, and rapper from the United States. He is known by various pseudonyms, including Posdnuos, Mercenary, Plug One, Sop Sound, Plug Wonder Why, and Pos. Mercer attended Amityville Memorial High School.

He is particularly known for his work in the hip hop and hip hop music genres. Mercer's involvement in the music industry spans across various sectors, such as music, music industry, and music technology.