Gracie Abrams is telling the whole story of the songwriting session with Taylor Swift that ended with “Us.” and a kitchen fire.

They were talking about their upcoming projects (Abrams was working on The Secret of Us, released on June 21 and Swift was working on The Tortured Poets Department, released in late April) and decided to go back to Swift’s apartment to play songs for each other.

“We opened a bottle of wine and we went song for song in the kitchen and we were being theater kids,” Abrams recalled of the night, adding that they were “running around the center island” in the room, performing for each other.

Amid their antics, they began listening to “sketches” of songs that producer Aaron Dessner sent them, and heard the beginning guitar strings for their song “Us.” which appears on Abrams’ latest release and features Swift, 34.

Taylor Swift putting out a fire in her New York City apartment. GRACIE ARBAMS/X

The singer-songwriters were so inspired they immediately began writing the song.

In the middle of their wine-fueled writing session, which occurred between 2 and 6 a.m., Abrams told Lowe, 50, that she heard a “crack” from the kitchen that Swift said was probably one of her cats.

Taylor Swift and Gracie Abrams during the Eras Tour in Cincinnati in July 2023. TAS2023 VIA GETTY 

However, when they eventually made it back to the kitchen, the “Risk” singer said there was “a bonfire on her center island…truly a huge ball of flame.”

Abrams had given Swift a candle that they’d lit and forgotten about in all of their excitement.

The candle base on fire. GRACIE ARBAMS/X

“It was so hot that it burst,” Abrams said, of the candle with a “tree trunk” base. “And it was on fire.”

Swift knew where she kept a fire extinguisher in her home and Abrams had been recording the process of writing “Us.” So, naturally, she took out her phone and started recording the “Fortnight” singer extinguishing the flames.

Taylor Swift putting out a fire in her New York City apartment. GRACIE ARBAMS/X

Abrams said that while she and Swift weren’t seriously injured, they had coughs “for weeks” after the fire and they did have minor burns from the wax.

“But ‘Us.’ came from that night, so that was a really good night,” Abrams said toward the end of her story.

Zane Lowe and Gracie Abrams. ZANE LOWE ON APPLE MUSIC 1

She opened up for Swift last summer on the North American leg of the Eras Tour, which Swift is currently performing in Europe. Abrams joined her onstage to perform “Us.” during the surprise song portion on Sunday in London.

Abrams’ interview with Lowe will be available Monday at 1 p.m. on Apple Music 1.