Taylor Swift claims she is being blocked from performing her old songs on TV.
She says that she isn't allowed perform a medley of her greatest hits at the upcoming American Music Awards and that her old record label is also preventing the release of a planned Netflix documentary.
The singer says music bosses Scott Borchetta and Scooter Braun - who own her back catalog - won't license her the tracks unless she agrees not to re-record them.
A statement from label Big Machine says the claims are "based on false information".
Halsey, Gigi Hadid and Lily Allen are among the celebrities supporting her after she tweeted about the latest controversy:
Don’t know what else to do pic.twitter.com/1uBrXwviTS
— Taylor Swift (@taylorswift13) November 14, 2019