What You Didn't Know About Rosalía

Following the release of Billie Eilish's song "Lo Vas a Olvidar" in January 2021 — which "will be part of HBO hit Euphoria's 'Part Two: Jules” soundtrack," per Billboard – fans are itching to learn more about her collaborator on the project, Rosalía. The tune features the "Bad Guy" singer's signature sound, but unlike anything she has done before, the song is sung in Spanish — perhaps a nod to Rosalía's wheelhouse. The songstress hails from Spain and has built a career as a Spanish singer-songwriter.

At the beginning of her career, Rosalía was known for her modern take on traditional flamenco music, but these days, she's taking it up a notch and collaborating with top artists, including The Weeknd, Bad Bunny, Travis Scott and Pharrell Williams. However, it seems like she has the utmost regard for her relationship with Eilish and the work they do together. Thanks to Rosalía's eight Latin Grammy Awards and her 2020 Grammy win for Best Latin Rock, Urban or Alternative Album for her second studio album El Mal Querer, it's no surprise that Eilish was yearning to collaborate with the rising star. Keep scrolling for more details about the singer.

Spanish songstress Rosalía and Billie Eilish have been teasing their work together for some time now. "We've been in the studio," Rosalía told Entertainment Tonight in November 2019. "We enjoyed making music together and I hope that we find more time to finish what we started," she teased, adding, "We started something ... and that's it." Dishing on their unique bond, she said, "In the studio, I always try to write as free as possible. And with her, it was amazing chemistry and I can't wait [to finish what we started]."

In March 2019, Rosalía took to Twitter to wink at their collab, but it seemed like they had unfinished business to attend to. "Can't wait to finish our song [black heart emoji] compartir contigo en el estudio o verte ayer actuar me inspira sooo much, love you B," she tweeted at the time alongside a photo of the pair. The portion of Rosalía's tweet that is in Spanish translates as (via Paper) "to share the studio with you and to see you working yesterday inspires me sooo much, love you B."

From the looks of Eilish's Instagram post following their song's release on Jan. 21, 2021, the feelings appear to be mutual. "OUT NOOOOOOOOOW @rosalia.vt i love this song so muchhh now here it is for you to enjoy," the Grammy winner captioned the post featuring their music video for the track. Fingers crossed for more Rosalía and Eilish collabs in the future!