After teasing a collaboration for over a year, Billie Eilish and Rosalia have officially announced that their new song together, titled “Lo Vas a Olvidar (You Will Forget Her),” is dropping Thursday, Jan. 21.

“You guys have been waiting for this,” Eilish captioned her post on social media, which includes a sneak peek of the music video for the song. “Lo Vas a Olvidar” will be part of HBO hit Euphoria’s “Part Two: Jules’” soundtrack. The episode’s teaser on social media features a preview of the track.

Fans have been waiting for this dream collab ever since the Spanish singer tweeted back in March 2019, “can’t wait to finish our song” along with a photo of the pair.

Then in April, Rosalía said in an interview with Apple Music's Zane Lowe that she had been working on finishing the song in her “little” studio: “I have been trying to finish the Billie Eilish collab. I think it’s getting quite close.”

“La Vas a Olvidar” is set to drop at 12pm ET along with a music video.

See the announcements below, and watch a teaser for the video: