Crazy in Love

"Crazy in Love" is a song by American singer and songwriter Beyoncé featuring a rap verse and ad-libs from Jay-Z. She wrote the song with him and Rich Harrison, and co-produced it with Harrison. It contains a sample of the Chi-Lites's 1970 song "Are You My Woman (Tell Me So)", resulting in the group's Eugene Record receiving a writing credit. "Crazy in Love" is a love song that incorporates pop, hip-hop, and R&B, with elements of 1970s soul and funk. Its lyrics portray a romantic fixation that leads the narrator to behave unusually. Columbia Records sent "Crazy in Love" to US radio on May 18, 2003, as the lead single from Beyoncé's debut studio album, Dangerously in Love (2003).

In the United States, "Crazy in Love" spent eight consecutive weeks atop the Billboard Hot 100 and received an eight-times platinum certification from the Recording Industry Association of America. Internationally, it topped the charts in the United Kingdom and Ireland and peaked within the top five in Australasia and several European countries. Music critics praised its catchy production, Jay-Z's rap verse, and Beyoncé's vocals, particularly the "uh-oh, uh-oh" hook. At the 46th Annual Grammy Awards, "Crazy in Love" was nominated for three awards and won two: Best R&B Song and Best Rap/Sung Collaboration. Rolling Stone placed it at number sixteen on their 2024 revision of the "500 Greatest Songs of All Time".

Jake Nava directed the accompanying music video for "Crazy in Love", which depicts Beyoncé in various dance sequences. It won three awards at the 2003 MTV Video Music Awards, including Best Female Video and Best R&B Video. The song became a Beyoncé's concert setlists and has been performed on all of her headlining concert tours. The American Society of Composers, Authors and Publishers recognized "Crazy in Love" as one of the most performed songs of 2004. It has since been covered and remixed multiple times; Beyoncé re-recorded it for the soundtrack of the erotic romantic drama film Fifty Shades of Grey (2015).