"TKO" is a song recorded by American singer-songwriter Justin Timberlake for his fourth studio album, The 20/20 Experience – 2 of 2 (2013). It was written and produced by Timberlake, Timothy "Timbaland" Mosley and Jerome "J-Roc" Harmon, with additional writing from James Fauntleroy and a sample of Barry White's "Somebody's Gonna off the Man". The song was distributed on September 20, 2013 by RCA Records, as the second single from The 20/20 Experience – 2 of 2. A remix of the track by rappers J. Cole, ASAP Rocky and Pusha T, known as the "Black Friday Remix", was also released. The lyrics use boxing metaphors to explain how somebody being knocked out feels to them when they see their ex out with another guy.