Scooter Braun
The singer has spoken out after her former label unveiled a new "live album" of hers without her approval.
The two have been embroiled in a high-profile feud since it was revealed he had bought the masters to Taylor's first six albums.
She said everything, without actually saying it.
The US star also wowed the audience with a medley of her hits at the annual bash.
The music manager – who looks after Justin Bieber and Ariana Grande – has mostly stayed quiet on the feud, but spoke out after receiving threats.
Taylor Swift And Her Former Label Appear To Have Reached Agreement In Row Over Old Songs... We Think
The singer has been involved in a public row with Big Machine ever since they were bought by music manager Scooter Braun.
It's now been claimed that the Lover singer "owes millions of dollars" to her old record label.
The singer has publicly called for her fans and other artists' support after she accused the pop manager of "exercising tyrannical control'.
Taylor had hit out at Scooter when she discovered he was the owner of the masters to her first six albums.
The music manager bought the US singer's entire back catalogue in a controversial deal earlier this year.