Finneas' work on his sister Billie Eilish's music as producer and sometime cowriter has made him one of the most sought-after names in music production.
And now he has partnered up with another female singer for two surprise songs, Tove Lo.
She had confirmed they had been in the studio together last year, but she had also just released an album a few months ago so new music wasn't expected.
The two songs couldn’t be more different.
The first is a sparse atmospheric ballad called "Passion and Pain Taste the Same When I'm Weak" and the other is a more up-tempo track called "Bikini Porn."
Take a listen to both songs below:
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