And it looks like it's going to be quite a production. Taylor announced via her Instagram account that Bad Blood will be the next single released from her über-successful album 1989. The song is supposedly a dis track written about her one-time friend Katy Perry, but Tay's lips are sealed. I mean, except for the song she is singing about it. Seems from the pic that we can expect a story video where Taylor plays a character named 'Catastrophe' and music video master Joseph Kahn (everyone's video) is directing. Look for it May 17th at the Billboard Music Awards.