José Nieves (R.K.M) and Kenny Vázquez (Ken-Y), both from Puerto Rico, were a Grammy Award-nominated reggaeton duo.
R.K.M provides rapping verses for many songs while Ken-Y provides the vocal lyrics. R.K.M tends to have fast, upbeat verses while Ken-Y sings many hooks.
This success attrcated Raphy Pina, the reggaeton moguls. They signed to the label and a year later released Masterpiece. The album was nominated for Premio Lo Nuestro of 2007. Their first hit single was "Down", reaching #1 on the Billboard Hot Latin Songs chart in 2006. Four other singles were released from the album, as well as music videos. The duo went on a tour across the world.
Since their first album, R.K.M & Ken-Y have appeared and guest starred on many songs. They have worked with artists such as Cruzito, Don Omar, Daddy Yankee, José Feliciano, Pitbull, Héctor "El Father", David Bisbal, Ivy Queen, Chino & Nacho, Hector Acosta "El Torito", Plan B, Tony Dize and Zion & Lennox.
Ken-Y did most of the singing within their songs while R.K.M only gets a few seconds to rap.