Billie Eilish Pirate Baird O'Connell born December 18, 2001) is an American singer and songwriter. She first gained attention in 2015 with her debut song "Ocean Eyes", which was subsequently released by the Interscope subsidiary Darkroom. The song was written and produced by her brother Finneas O'Connell, with whom she collaborates on music and live shows. Her debut EP, Don't Smile at Me (2017), became a hit, reaching the top 15 in the US, UK, Canada, and Australia.
Eilish's debut studio album, When We All Fall Asleep, Where Do We Go? (2019), debuted atop the US Billboard 200, reached number one in the UK, and became one of the best-selling albums of 2019. The album's fifth single "Bad Guy" became her first number-one song on the Billboard Hot 100. In 2020, she performed the theme song "No Time to Die" for the James Bond film of the same name, which topped the UK singles chart. Her later singles "Everything I Wanted", "My Future", "Therefore I Am", and "Your Power" peaked within the top 10 in the US and UK.

Eilish has received several accolades, including seven Grammy Awards, two American Music Awards, two Guinness World Records, three MTV Video Music Awards, and two Brit Awards. She is the youngest person and the second in history to win the four main Grammy categories in the same year: Best New Artist, Record of the Year, Song of the Year, and Album of the Year. In 2019, Time magazine placed her on their inaugural Time 100 Next list. According to the RIAA, Eilish is the 26th-highest-certified artist of the digital singles era, and one of the most successful artists of the 2010s decade, according to Billboard.