More Billie Eilish Dongs After Collab With Rosalia Meanwhile, the Spanish singer-songwriter, whose real name is Rosalia Vila Tobella, also took to social media to share the much-awaited team-up with Billie Eilish. "LO VAS A OLVIDAR w @billieeilish for @euphoria 21/1/21," she captioned her post alongside the teaser cover and clips from the official video. Following the "Ocean Eyes" singer's announcement, fans flocked to Twitter to express their support for the award-winning artist and her collaboration with the brunette beauty. "BILLIE EILISH AND ROSALIA ON A EUPHORIA SOUNDTRACK WITH JULES AS A COVER. THIS IS TOO MUCH WAIT WAIT," one fan tweeted.