When We All Fall Asleep, Where Do We Go? is the debut studio album by American singer and 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 largely co-wrote the album with her brother Finneas O'Connell, who produced its music at his small bedroom studio in Highland Park, Los Angeles.