Five years after 'party 4 u' appeared on how i'm feeling now, the album Charli xcx made during lockdown in 2020, the song found a mass audience through TikTok and reached the Billboard Hot 100 in 2025. She wrote it with A.G. Cook, who also produced it. Over echoing synths building towards a climax, she sings about throwing a party for someone who never shows up, about longing and loneliness in the middle of a crowd. This edition is a 7-inch single on black vinyl.