闺蜜在半夜三更唱响你的夜
[guī mì zài bàn yè sān gèng chàng xiăng nĭ de yè]
Translated loosely to 'My best friend turns your night into a song at midnight.' Here, '闺蜜' specifically means very close female friends who would keep each other company, including staying up late together having heartfelt talks.