Billie Eilish appears to have referenced Johnny Depp's defamation trial against Amber Heard in an unreleased song that she debuted on tour.

The 20-year-old singer is embarking on the UK leg of her Happier Than Ever world tour and performed at Manchester’s AO Arena on June 7.

During Eilish's Manchester show, she debuted a new song titled 'TV' which is a slow song with lyrics that may be aimed partly at the highly publicized Depp v Heard trial that concluded last month.

The 'Bad Guy' singer performed the song with her brother and co-writer Finneas O'Connell at the city's Arena. The pair sat on two stools while Finneas played the acoustic guitar for the sad, melancholic song.

Watch Eilish perform her new song below:

[[youtubewidget||https://www.youtube.com/watch?v=AXSgS93axbc]]

"We haven't played a new song live before it's out since 2017 or 2018," Eilish said to the audience before performing the new track for the first time. "This is one we just wrote and we just wanted to play for you."

"The internet’s gone wild watching movie stars on trial," she sang, continuing to mention the landmark ruling that gave women abortion rights, saying: "While they’re overturning Roe v Wade."

The latter is a reference to a leaked draft opinion suggesting that the Supreme Court could overturn abortion rights, which has sparked controversy across the US.

[[imagecaption|| Billie Eilish and Finneas O'Connell. Credit: DPA picture alliance / Alamy.]]

The musician's song reference comes after the 58-year-old Pirates of the Caribbean star won his six-week defamation case against 36-year-old Heard on June 1.

A Virginia Jury determined the Aquaman star defamed Depp in a 2018 Washington Post op-ed she penned that referred to herself as a domestic abuse victim.

Depp was awarded $10.4 million in damages and the jury also awarded Heard $2 million in damages in her countersuit due to Depp's lawyer claiming her accusations against her former husband were a "hoax."

Since the verdict ruling, the Edwards Scissorhands star has been in the UK performing with musician Jeff Beck and recently announced they will release a collaboration album next month.

Following his legal victory, he also launched a TikTok account and shared a message with his current 13.6 million followers.

Featured image credit: DPA picture alliance / Alamy.

Billie Eilish appears to reference Johnny Depp and Amber Heard trial in new song debuted on stage