Which Beyoncé song features a guest rap by Jay-Z and opens with a siren-like sound?

Beyoncé’s “Crazy in Love” features a guest rap by Jay-Z and opens with a distinctive horn-driven, siren-like sound.

Released in 2003, the song was the lead single from Beyoncé’s debut solo album, Dangerously in Love. Its production was led by Rich Harrison, who built the track around a prominent sample from “Are You My Woman (Tell Me So)” by the Chi-Lites.

Jay-Z contributes the opening rap verse, while Beyoncé delivers the sung sections and repeated hook. The combination helped establish the song as a defining early statement of her solo career.

“Crazy in Love” reached number one on the Billboard Hot 100 and won Grammy Awards for Best R&B Song and Best Rap/Sung Collaboration. It is sometimes confused with “Drunk in Love,” another Beyoncé-Jay-Z collaboration released more than a decade later.