Finneas and Billie Eilish performing in August.Photo:Emma McIntyre/Getty

In this image released on August 11, (L-R) FINNEAS and Billie Eilish perform at the LA28 Olympic Games Handover Celebration

Emma McIntyre/Getty

Billie Eilishis showing why she and her brother,Finneas O’Connell, make a good team.

On Wednesday, Dec. 11, Eilish, 22, released anInstagram Reelof her and O’Connell, 27, whohelps write and produce her music, riffing an early version of the track, “Birds of a Feather.”

“February 16th 2023 lil video of the beginnings of birds of a feather 😋😋,” Eilish captioned the post.

The video shows the duo discussing thelyricsto the chorus, which would eventually become, “Birds of a feather, we should stick together, I know (‘Til the day that I die) / I said I’d never think I wasn’t better alone (‘Til the light leaves my eyes) / Can’t change the weather, might not be forever (‘Til the day that I die) But if it’s forever, it’s even better.”

“I love that idea,” says Eilish as the two begin to compose the lyrics, and O’Connell discusses how the song should be sung.

The track is from Eilish’s latest album,Hit Me Hard and Soft, which was released in May.

The PEOPLE Puzzler crossword is here! How quickly can you solve it? Play now!

‘Hit Me Hard and Soft’ album cover.William Drumm

Billie Eillish, Hit Me Hard and Soft

William Drumm

The singer candidly opened up onInstagramaboutwhat the album meant to herafter its release.

“Dude ‘HIT ME HARD AND SOFT’ my third album is f—— out now i don’t even know what to SAAYY…,” wrote Eilish.

“@finneasand i put so much into this album and have never ever ever loved something more. we hope you enjoy it so much and i’ll see you on the other side EEEEEEEEEEEEEK HMHAS OUT NOW EVERYWHERE LOVE YOU ALL TO DEAAAAATH!!!!😭😭😭,” her caption continued.

Billie eilish atlanta 11 03 24

Paras Griffin/Getty

The albumhelped Eilish score seven nominationsfor the2025 Grammy Awardsfor categories such asalbum of the year, song of the year, and record of the year.

Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.

She iscurrently on a world tour in support of the album. TheNorth American tour datesend with a performance in Inglewood, Calif., on Dec. 21. The tour resumes in Australia in February 2025.

source: people.com