Many years in the making, Taylor Swift’s beef with Justin Bieber finally reached a boiling point, spilling into the public via a social media row. Swift took to Tumblr to excoriate Scooter Braun, who manages Bieber, for purchasing the masters of all six of her records.

Swift, who still holds the publishing rights for her writing, has long attempted to buy her masters from her previous label, Big Machine. But Big Machine founder Scott Borchetta sold them to Braun instead.