The most recent proof came late Monday, March 28th, when Timberlake posted yet another behind the scenes photo in the studio. This one reveals him at work with Timbaland. Like many of his other Instagram posts from the studio, he simply captioned the shot, "Currently."

It's not the first image to emerge of the two collaborating together in the studio. Timbaland shared a photo on Instagram showing him working with Timberlake on the same day Timberlake posted a photo with Pharrell.