Taylor Swift's album catalog was sold by her record label a few years ago, before she had the opportunity to buy it back. Since that time, she hired a legal team to scour her recording contract with Big Machine and they found a provision that would allow her to re-record her masters after 7 years of each album released.
Most artists in the music industry never exercise this option, however, Taylor Swift has already re-done and re-released 4 albums from her catalog. The latest, '1989' (Taylor's Version) just broke Spotify's record for the most streams on an album within 24 hours, meaning her fans are now disregarding the older version and playing the new one as if they've never heard it before.

Due to Taylor's success with these remakes, we're now hearing that the major labels such as Universal, Sony, and Warner Music are now trying to revise their artists' contracts to prevent this from ever happening again. They're now negotiating to change these clauses from 7 year periods to the upwards of 10, 20, or even 30 years before an artist can remake their masters and own them outright. Tune into my latest episode of the Pen Game Elite Podcast for more specifics.