Is Lana Del Rey totally shading Taylor Swift? Or is this all a part of a bigger feud with another pop star? The speculation started on Wednesday, when the Video Games singer posted a video to Instagram teasing a new song. In the caption, she wrote: "Track 13 @jackantonoff" Well - that says enough right there to get Swifties' minds spinning! Tay Tay's favorite number and also a nod to Jack Antonoff. Why would that be shade instead of camaraderie? Because Tay is notably not using Jack as a producer on her new album, The Life of a Showgirl.