AP Breakthrough Entertainer Finneas finds his lane in music

Onstage, siblings Finneas and Billie Eilish come across like a seasoned, veteran musical duo. But as Billie's star power grew brighter, so did Finneas'. He was recognized for producing and engineering his sister's music, as well as co-writing the hits that made her famous — some of them he even wrote alone. (Dec. 17)