Billie Eilish Pirate Baird O'Connell ( born December 18, 2001) is an American singer-songwriter and musician. Known for her unique musical sound and haunting vocals, Eilish is a prominent figure in modern pop culture. Eilish first gained public attention in 2015 with her debut single "Ocean Eyes" which was released on SoundCloud and written and produced by her brother Finneas O'Connell. In 2017, she released her debut EP, Don't Smile at Me, which was commercially successful in various countries, including the US, UK, and Australia.