Billie Eilish and Rosalía announce long-awaited collaboration "Lo Vas A Olvidar"

"Lo Vas A Olvidar" will arrive tomorrow (21 January), and will feature on the second special episode of Euphoria airing this Sunday (24 January) on HBO.

The collaboration was first teased in March 2019 when Rosalía posted a polaroid picture of both of them in the studio.

Just over a year later Rosalía gave an update on the collaboration while speaking to Zane Lowe, revealing that she was "trying to finish the Billie Eilish collab".

Last night (19 January) both artists shared a 15-second teaser of the music video, which shows Eilish in different lighting setups.

Billie and @Rosalia - “Lo Vas A Olvidar”
For @EuphoriaHBO
Song and music video out on 1/21/21 at 9am PT pic.twitter.com/7m6kaos1fQ

— billie eilish (@billieeilish) January 19, 2021

They also reposted the Euphoria special episode trailer, which features a snippet of their collaboration.

part two: jules
stream it early friday at 9pm et/6pm pt on @hbomax. pic.twitter.com/DOpixn4itM

— euphoria (@euphoriaHBO) January 19, 2021

"Lo Vas A Olvidar" will be Eilish's first release since November 2020's "Therefore I Am", and will follow Rosalía's appearance on the remix of The Weeknd's "Blinding Lights" last month.