Nearly two years after they were first spotted in the studio together, the two singers released a new Spanish-English duet titled "'Lo Vas a Olvidar" ("You Will Forget Her" in English) on Thursday, along with its accompanying dreamlike music video.
Produced by Billie Eilish's older brother and frequent collaborator, FINNEAS, the track will appear on an upcoming special episode of HBO's Euphoria titled "Part 2: Jules," airing on Sunday at 9 p.m. EST.
During an interview with Apple Music's Zane Lowe on Thursday, Billie Eilish, 19, gushed about the song, saying she "loved" it when she heard it finished. She said it just worked, although it’s so weird. She doesn't feel like she’d heard a song like that before.
Obviously, a lot of it is in Spanish, which Billie Eilish thinks is so important. She remembered when we were writing the song, and Rosalía was saying something about how it should be in English. But she was like, 'No, no, no. It should be in Spanish. It 's so beautiful.'