Billie Eilish and Finneas Arriving at Anita's Birthday Party in Brazil

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Billie Eilish Pirate Baird O'Connell is an American singer-songwriter.

She first gained public attention in 2015 with her debut single "Ocean Eyes", written and produced by her brother Finneas O'Connell, with whom she collaborates on music and live shows.

Born: 18 December 2001 (age 21 years), Los Angeles, California, United States

The first songs they recorded together were called "She's Broken" and "Fingers Crossed", the former written by Finneas and the latter by Eilish.

The track was written, mixed, and produced by Finneas, who had originally created it for his band the Slightlys, before deciding it would be a better fit for Eilish's vocals.