Beyoncé's song featuring Jay-Z and opening with a distinctive brass hook is “Crazy in Love.” Released in 2003 as the lead single from Dangerously in Love, it was built around a prominent horn sample from the Chi-Lites' 1970 song “Are You My Woman (Tell Me So).”
The song combines Beyoncé's forceful R&B vocal with a rap verse by Jay-Z. Rich Harrison produced and co-wrote the track, while Beyoncé and Jay-Z also received songwriting credits. Its energetic arrangement helped define the sound of her early solo career.
“Crazy in Love” reached number one in the United States and the United Kingdom and won two Grammy Awards in 2004. It is sometimes confused with “Déjà Vu,” another early Beyoncé single that also features Jay-Z.