Share Comments (14 comments) Justin Timberlake drops new song, 'TKO' The second half of Justin Timberlake's "20/20 Experience" won't arrive until September 30, but here's a sample of what's to come. The 32-year-old singer has released a new track called "TKO," a bouncy single that heavily features one of Timberlake's favorite collaborators, Timbaland.