Billie Eilish has admitted that she cried after performing a song from her new album live for the first time.

During an appearance on Radio 1's New Music Show with Jack Saunders, Billie revealed that her album, Hit Me Hard and Soft, had been in the making for almost two years before its release on Friday.

"We started working on this album officially in October 2022 and had many months of ideas that weren't very solidified and weren't very exciting to us," she recalled. "We liked them but we were like... I don't think we can do this any more."

Billie shared that the first song that she and her brother and co-writer Finneas wrote for the album, titled Skinny, "awoke something in us".

The Ocean Eyes singer went on to tell the radio host that she became emotional after performing her new song The Greatest, the sixth track on the album, for the first time in Los Angeles last week.

"The count-in happened and I was sitting there on the edge of the stage in front of this tiny crowd and I was like, 'Woah, I've never done this one before' and it's really one of my hardest," Billie recalled. "I love that song so much. That song is really, really special to me."

She added, "I literally performed it the other day and cried after."

Elsewhere in the interview, the Bad Guy hitmaker reflected on the success of her Oscar-winning song What Was I Made For? from the 2023 Barbie soundtrack.

She shared that the song "opened all these doors to millions of things in terms of inspiration".

Hit Me Hard and Soft comes almost three years after her second studio album, 2021's Happier Than Ever.