Lo Vas Olvidar is Billie Eilish and Rosalia’s collaboration which is out Thursday morning at 9am PT. The song is for HBO’s Euphoria.

The track has been in the making for a year now. In April, Rosalia teased a collab between the two when she told Zane Lowe, “During these last two weeks, I have been trying to finish the Billie collab. I think its getting quite close.”

Premiering in June 2019, Eurphia, follows the life of a group of high school students who experience sex, drugs, alcohol, love and friendships. Zendaya is the lead role with Maude Apatow, Angus Cloud, Eric Dane, Alexa Demie and many more.

Billie took to Instagram announcing the song, “You guys have been waiting for this.” In the teaser, there are only some sounds you hear behind what is said to be the music video preview for the song.

Eilish said last year in an interview with BBC Radio 1 that she reached “some notes I have never even thought about” whole recoding this song.

Fans did not keep clam about this news as it was trending on Twitter within 30 minutes.

Billie’s latest song, Therefore I am, came out in early November of last year. It was a dark track along with a music video which was very suiting for pandemic times. Billie is running around an abandoned Glendale Galleria mall, hitting all her favourite places while grabbing pretzels and doughnuts along the way. The song is a message that she doesn’t care what people think about her or her body, This is why fans think she was eating through the whole video as she was body shammed last year. She’s not giving into the negativity.

Eilish also posted to her Instagram story in December, jokingly telling fans she won’t release a new album if her fans keep making fun of her hair. She then said she will be changing her hair after the release of her new documentary, Billie Eilish: The World’s A Little Blurry, which premieres in February on Apple TV+. The doc is directed by RJ Cutler and it goes through the life of the 19 year olds fame and of course her 2020 Grammy sweep.