Finneas O'Connell, known mononymously as Finneas, is an American singer-songwriter, record producer, and musician from Los Angeles. He is best known for his work in pop and alternative/indie music genres. Finneas is the brother of Billie Eilish, with whom he has collaborated extensively.
Finneas began his career in music by performing with his band, The Slightlys, before venturing into solo work. He gained significant recognition for co-writing and producing several tracks for his sister, Billie Eilish, including the critically acclaimed album "When We All Fall Asleep, Where Do We Go?" His production style and songwriting have earned him numerous accolades, including Grammy Awards. Aside from his work with Billie, Finneas has released his own solo music, showcasing his talent as a performer and lyricist. He continues to be a prominent figure in the music industry, balancing his solo career with his collaborative work.