Justin Timberlake has been back for a while, but now he's finally paired back up with Timbaland.

The singer recently released the brand new track "TKO," which is the follow up to "Take Back The Night" off his upcoming album "The 20/20 Experience - 2 of 2." Like many of his newer "20/20" hits, the album version of the song is quite long, clocking in at just over seven minutes. Timbaland served as producer of the song, which features Timberlake singing about a former fling and how he might not be ok seeing her with someone else.

Timbaland provides some dirty lyrics throughout the song, which is somewhat reminiscent of the Jay-Z/Justin collaboration, "Holy Grail." Jay-Z and Drake will be featured on the second "20/20 Experience" album, which is set to be released on Sept. 20.

AceShowbiz reports that on Ryan Seacrest's radio show, Timberlake explained that he split "The 20/20 Experience" into two albums because he had an abundance of songs he didn't want to get rid of.

"I just felt like so much of it went together," Timberlake said. "I wanted to release a double album, but then after speaking to my label, we thought it would an interesting idea to see what it would be like to split up a double album and release it over the course of a year."

"The songs that I released in March just reminded me of summertime a little bit more and the songs that are coming out this month felt a little darker so they made me feel like the fall/winter collection," he added.

According to AceShowbiz, he 32-year-old pop star may debut some new songs when he performs at the iHeartRadio Festival in Las Vegas tonight. Listen to "TKO" below and let us know what you think.