Billie Eilish and Rosalía will release a new song together on Thursday January 21st. The track “Lo Vas a Olvidar” appears that day at 12 noon Eastern. The artists made the song for HBO’s Euphoria. Check out the announcements from Eilish and Rosalía below.

Rosalía has been teasing their hasty collaboration for almost a year. “I think it’s going to be pretty tight … I’ve finished the arrangements,” she told Zane Lowe in April. “I feel like production, the sound design is almost done so all I need is Billie to send the vocals and they send me the ideas they want to add because we are there.”

Billie Eilish closed 2020 with her song “Therefore I am”. She will soon be releasing a self-titled photo book and Apple TV + documentary Billie Eilish: The World’s A Little Blurry.

Rosalía’s second album, EL MAL QUERER, was released in 2018. Last year she shared “Dolerme”, “Juro Que” and “TKN”. She was also featured in a remix of Weeknd’s “Blinding Lights”.

Read Pitchfork’s rising feature, “Meet Rosalía, the Spanish singer who brings a modern twist to the ancient sound of flamenco.”