Born on December 18, 2001 in Los Angeles, Billie Eilish grew up in a household of actors and musicians and was home-schooled along with her brother Finneas. Given her environment, Billie has been familiar with music ever since childhood and even joined a children choir at the age of eight. By the time she hit 11, she began writing and composing her own songs.

Billie made her debut as a singer in October 2015, when she released a single titled "Ocean's Eyes". The song was initially written by Finneas for his band, but he ultimately gave the song to his sister. A music video for the song was released on March 24, 2016 before Billie re-released the track through Interscope Records later in November of that year. In early 2017, she released an EP featuring four remixes of "Ocean's Eyes".

Following the release of other singles such as "Bellyache" and "Bored", which was a part of the soundtrack to "13 Reasons Why", Billie announced her debut EP "Don't Smile at Me" in July 2017. "Don't Smile at Me" was released on August 11 and debuted at No. 185 on Billboard 200 a month and a half after its release. The track "My Boy" was used in the fourth episode of "Shadowhunters" season three.

Billie embarked on her first tour, "Where's My Mind Tour", in February 2018. The tour wrapped up in April, the same month she unveiled her collaborative track with Khalid titled "Lovely" It served as the soundtrack to the second season of "13 Reasons Why". Billie began the rollout for her debut album "When We All Fall Asleep, Where Do We Go?" in July, releasing its first single "You Should See Me in a Crown". The second single, "When the Party's Over", was released on October 17, while the third single, "Bury a Friend", made its way out on January 30, 2019.

"When We All Fall Asleep, Where So We Go?" hit the stores on March 29, just weeks after the release of its fourth single "Wish You Were Gay". It debuted atop Billboard 200, helping her become the first artist born in the 2000s to have a No. 1 album. In the following month, she performed at the 2019 Coachella Valley Music and Arts Festival.

"When We All Fall Asleep, Where Do We Go?" continued to do well on music charts and even helped Billie make another record after every song from the album, excluding "Goodbye", charted on Hot 100. In doing so, the singer broke the record for most simultaneously charting Hot 100 songs by a female artist with 14 songs. She also became the youngest artist to have a No. 1 single after "Bad Guy" dethroned Lil Nas X's "Old Town Road" on Billboard's Hot 100.

Given how well the album performed commercially and critically, it was only natural for her to earn several awards thanks to the record. "When We All Fall Asleep, Where Do We Go" won Album of the Year at 2019 Apple Music Awards and Foreign Album of the Year at the 2019 Danish Music Awards. In addition to that, it won Album of the Year, Best Pop Vocal Album and Best Engineered Album, Non-Classical at the 2020 Grammy Awards.

Those weren't all the accolades Billie received at the biggest music event in the industry. During the live ceremony, she was also named the winner of Record of the Year and Song of the Year for "Bad Guy" and Best New Artist. With that, she became the youngest artist and first woman to win the four main Grammy categories. Prior to her record-breaking win, she was also crowned the 2019 Billboard Woman of the Year.

Billie did not stop making music after that. On February 13, 2020, she unleashed the theme song for the 25th installment in the James Bond film franchise, "No Time to Die". Written and produced with her brother Finneas, the song became the second Bond theme to top the charts after Sam Smith's "Writing on the Wall" and her first No. 1 single in the United Kingdom.