In addition to being siblings, they’re partners, collaborators, and most of all, best friends. Billie Eilish and her producer and older brother, Finneas O’Connell, have worked closely together throughout the singer’s rise to fаme, but their relationship goes beyond professional collaboration. Finneas is credited with co-writing and producing most of Billie’s songs, and he often joins her at events and interviews to support her and promote her music. As you may know, they’re siblings—Finneas is five years older than Billie, and their parents are Maggie Baird and Patrick O’Connell.

The O’Connell family is incredibly close, and they even built a home studio for their children to create music. In 2018, Finneas mentioned in an interview that they have always been a tight-knit family, so working together on music wasn’t a significant change. “We get along very well, so it’s been quite pleasant,” he said.

While their working relationship is strong, the family bond is even deeper. Billie has mentioned on several occasions that Finneas is her best friend, and even though she’s expanded her social circle, her connection with her brother remаins special. Finneas has been her biggest supporter and the one who’s always had her back.

Billie’s full nаme is Billie Eilish Pirate Baird O’Connell, but she chose to use one of her middle nаmes as her stage nаme, while Finneas kept his original surnаme. Sometimes, people think “Eilish” is Billie’s last nаme, but both siblings share the last nаme “O’Connell.” The family has Irish and Scottish roots, and “Eilish” is the Gaelic translation of Elizabeth.

Finneas now lives with his girlfriend, YouTuber Claudia Sulewski, but Billie still visits him regularly to continue making music together. Although Finneas had a brief stint in acting, he dedicated most of his time to Billie’s music, which has earned him several awards. At the 2020 Grammys, he won four awards for his work on the album “When We All Fall Asleep, Where Do We Go?”

Regarding her experience working with her brother, Billie mentioned that they both started making music together in their teenage years, and since they lived so close to each other, they decided to collaborate. Since then, their relationship has become inseparable, showing that their connection goes far beyond music.