Finneas O'Connell, known mononymously as FINNEAS, is an American singer, songwriter, record producer, and actor. He has written and produced music for various artists including his younger sister, Billie Eilish.
Finneas O'Connell, known mononymously as FINNEAS, is an American singer, songwriter, record producer, and actor. He has written and produced music for various artists including his younger sister, Billie Eilish.