We Need to Revisit the "Bad Blood" Music Video and Its Supersize Cast

Kendrick Lamar plays Welvin Da Great and joined Swift on the track. He told Ellen Degeneres in 2015 that the track came together after Swift reached out. "I've always been a fan of hers, and she was a fan of my music and she reached out and we got it done," he said, per E!.

"Bad Blood" feat. Kendrick Lamar is currently not on the "1989 (TV)" track list, which has a lot of fans curious about if Swift has more surprises up her sleeve since previous "Taylor's Version" albums have featured all the original collaborations.