When We All Fall Asleep, Where Do We Go? is the debut studio album by American singer-songwriter Billie Eilish. It was released on March 29, 2019, by Darkroom and Interscope Records in the US and Polydor Records in the UK. Eilish, aged 17 at the time of release, largely wrote the album with her brother Finneas O'Connell, who produced it at his small bedroom studio in Highland Park, Los Angeles.

Billie Eilish Pirate Baird O'Connell is an American singer and songwriter. She first gained public attention in 2015 with her debut single "Ocean Eyes", written and produced by her brother Finneas O'Connell, with whom she collaborates on music and live shows. In 2017, she released her debut extended play (EP), Don't Smile at Me. Commercially successful, it reached the top 15 of record charts in numerous countries, including the US, UK, Canada, and Australia.