Oliver Manjet Chambuso (born September 7, 1992), known as Oliver Kesi or just Kesi (stylised as KESI), is a Danish rap artist. He promoted himself through his own YouTube channel within the grime genre also cooperating with others, notably Kidd. He also made music with a group of Nørrebro-based rap artists BOC (abbreviation for Bars of Crack or Bombs Over Copenhagen or Bombs Over Centrum). Success on the Internet with particular debut song "Byen Sover" (meaning "The City Sleeps") led to a series of concerts and interest from established record labels, such that Kesi, at the age of 18 signed with Universal Records in July 2011.