Beyoncé's song featuring Jay-Z and the famous horn sample is “Crazy in Love.”
Released in 2003, the track served as the lead single from Beyoncé's debut solo album, Dangerously in Love. Its energetic production was created by Rich Harrison, who built the song around a chopped sample from “Are You My Woman (Tell Me So)” by the Chi-Lites.
Jay-Z contributes a rap verse, and the collaboration helped define the song's early-2000s pop and R&B sound. “Crazy in Love” reached number one on the Billboard Hot 100 and became one of Beyoncé's most recognizable recordings.
The song is often mixed up with “Drunk in Love,” another Beyoncé and Jay-Z collaboration, but that later track appeared on the 2013 album Beyoncé. The distinctive brass opening belongs to “Crazy in Love.”