Crazy in Love is an R&B/funk song written by Beyoncé Knowles, producer Rich Harrison, rapper Jay-Z, and Eugene Record. Released as the first single from Beyoncé's debut album "Dangerously in Love" in mid 2003 (see 2003 in music), it reached number one in the United States and United Kingdom and the top ten on the majority of charts it entered across the world. The song contains a prominent horn sample from The Chi-Lites' 1970 "Are You My Woman (Tell Me So)", and serves as the song's hook. Its success established Knowles as a leading solo performer following several years as a member of the band Destiny's Child.