Billie Eilish Wrote & Recorded 'My Future' With Finneas in Just 2 Days

Billie Eilish and her brother/hitmaking partner Finneas have been on their A-game for over a year, so it almost comes as no surprise that they made her brand new single "My Future" out today (July 30) in just two days.

Eilish chatted with Apple Music's Zane Lowe about how the new song, which splits her dulcet vocals over the ballad-turned-groovy tune, channels her growth as a person, but her growth as an artist is also a salient force to be reckoned with.

"This was such a satisfying process. It was so, so satisfying. We wrote the song in like two days," she said of their "crazy fast" songwriting and recording process, which Eilish notes has been picking up the pace lately. "This is the most we've ever worked in one period of time. But we record, we wrote it like a month into quarantine probably. And it was pouring rain. We were in this like... Oh, it was such a perfect setting. And then we recorded the vocal in Finneas' studio, which is just in his basement in his house.... For me, I'm sure you know, I take f---ing forever to get a vocal take that I like, and I do like a billion takes. And this one... I just, I don't know, there was something about this one take that I did, and I was like, 'This is the only way that it can be.'"

While a rainy day inspired the superstar sibling duo's first day working on "My Future," a day by the pool inspired their second (and last) day of production.

"You know what was funny? It was, we were kind of stuck for like a day. We were like, 'What the f--- do we do here? What do we... where does this go?'" she continued telling Lowe. "I was like, 'I don't think we're going to get anything done.' We had the song recorded, but we didn't have, we didn't know what to do with it. And we popped in the pool. We got out of the pool, and I was literally going to go home. And I was like, 'Let's just f--- around with it a little more.' And we finished the song that night, like finished completely. It was crazy."

Watch a snippet of Eilish's interview about "My Future," which will be fully out tomorrow (July 31) on Apple Music's New Music Daily at 12 a.m. EST, here.