Sibling Collaboration and Musical Evolution

Billie Eilish and Phineas O'Connell have established a unique collaborative relationship as siblings, starting their musical journey together when Billie was just 13. Their partnership has been marked by a remarkable evolution, particularly as Billie’s vocal abilities have matured over the years; she now describes her singing voice as significantly more robust and versatile than it was during her early teen years. In the process of creating their latest album, 'Hit Me Hard and Soft,' Billie has worked with a singing teacher, contributing to her vocal growth and confidence. Their combined efforts have led to groundbreaking achievements, including record-breaking streams on Spotify and multiple Grammy nominations for their recent works.