Finneas O'Connell, known simply as Finneas, is a multi-talented American singer-songwriter, musician, and producer. He gained widespread recognition for his work with his sister, Billie Eilish, and has carved out his own successful solo career. Finneas co-writes and produces most of Billie Eilish's music, including hits like "Bad Guy" and "When the Party's Over." Their partnership has won multiple Grammy Awards.

Finneas has released his own music, showcasing his unique style that blends pop, indie, and acoustic elements. His solo tracks often explore themes of love, heartbreak, and personal growth. His debut album, Blood Harmony, released in 2021, received critical acclaim and further established him as a solo artist. Finneas is known for his innovative production techniques and has worked with various artists beyond Billie Eilish, contributing to their sound and songwriting.

Finneas’s songs often feature introspective lyrics and a personal touch. He incorporates elements from various genres, including pop, rock, and folk, creating a distinctive sound. Finneas has received numerous accolades for his work, both as a producer and a solo artist, including Grammy Awards and nominations. Finneas is a prominent figure in contemporary music, celebrated for his artistry and collaborative spirit.