Country star Taylor Swift says new song Bad Blood, taken from her upcoming album 1989, portrays a conflict with a well-known music artist.
Swift, 24, who has written ballads about her break-ups in the past, however did not disclose the fellow popstar's name, reported Rolling Stone magazine.
"For years, I was never sure if we were friends or not. She would come up to me at awards shows and say something and walk away, and I would think, 'Are we friends, or did she just give me the harshest insult of my life?'," she said.
Swift reveals how their relationship then took a turn for the worse.
"She did something so horrible. I was like, 'Oh, we're just straight-up enemies'. And it wasn't even about a guy! It had to do with business.
"She basically tried to sabotage an entire arena tour. She tried to hire a bunch of people out from under me. And I'm surprisingly non-confrontational - you would not believe how much I hate conflict. So now I have to avoid her.
"It's awkward, and I don't like it. I know people will make it this big girl-fight thing. But I just want people to know it's not about a guy," she said.
Also read: If you piss off Taylor Swift, she'd write a song about you: Ed Sheeran
Here is the real story: a cold war between singers Taylor and Katy Perry broke out when three of the former's dancers shifted to the latter's troupe a year ago.
Swift continues to hold a grudge over the matter, so much so that she even wrote a song titled Bad Blood.
According to TMZ.com, Swift felt betrayed because she became very close to the dancers and considered them family, but they wanted to work with Perry.
However, the three dancers had actually worked with Perry first, and her tour ended several years ago, they needed work that's when they signed up as dancers during Swift's tour.
The three dancers told Swift they can't be on her full tour and asked for a 30-day out with the intent that they could join Perry on her tour. But Swift became so upset that she fired the trio.