Justin Timberlakehas released the second single from his upcoming second album this year, The 20/20 Experience: 2 of 2. "TKO" is a collaboration with frequent partner-in-crime Timbaland. JT spent the day teasing fans with previews of the lengthy track on Instagram. It's got everything you would expect to hear when these two get together: a driving beat, pulsing synths, a catchy chorus, and a beatbox interlude. Stream the song below and pre-order the album via iTunes before it comes out on September 30th.