You might know Billie Eilish as one of the breakout stars of 2017 from her hit song "Ocean Eyes" but did you know that her 21 year old brother Finneas writes and produces music with her?
We talked to Finneas about working with his sister, relating to people who love her music, and why they both think "fan" is a little bit of a bad word.
Plus, he revealed the thing they always see on Instagram that makes them laugh the most!
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