Who Is Billie Eilish's Brother
Billie Eilish's brother is Finneas O'Connell, an American singer, songwriter, and record producer. He is her full sibling and primary creative collaborator.
Finneas O'Connell's Career
Finneas writes and produces music for Billie Eilish and other artists. He has worked on multiple chart-topping albums and singles, often credited as co-writer and producer.
Collaborations and Public Profile
Finneas frequently performs with Billie Eilish and appears in her music videos and tours. Their partnership has shaped her sound and contributed to major award wins.
For more details, see the Billie Eilish biography on Wikipedia.
