Billie Eilish dropped her latest single, “Lo Vas a Olvidar" ("You Will Forget Her"). It's a collaboration with Spanish singer-songwriter Rosalía.<br /><br />The previously announced tune is featured on the soundtrack for a special episode of "Euphoria," HBO's gritty teen drama tackling drug abuse, sexual assault and self-harm. <br />The video is extra moody, as you might expect from Eilish. It features the powerhouse singers, alone, in the darkness.<br /><br />Eilish recently discussed her latest release with Apple Music host Zane Lowe, saying it took two years to come together.<br />The Grammy-winning performer said Rosalía helped challenge her as a musician — something she thoroughly enjoyed.<br />The last verse of ,Lo Vas a Olvidar. You say it to me like it's something I have any choice in , If I wasn't important, then why would you waste all your poison? is extra special for Eilish because she crafted it with her family during quarantine.