Justin Timberlake continues his successful chemistry with producer Timbaland and drops off his second single “TKO” off his forthcoming The 20/20 Experience (2 of 2).  The new track finds J.T. trying to make sense of his run-in with love that went bad and left the singer knocked down.  Timberlake shares his hurt and confusion when he sees his former love interest out with a new guy.