Which song gave Beyoncé her first solo UK number-one single in 2003?

“Crazy in Love” gave Beyoncé her first solo UK number-one single in 2003.

Released as the lead single from Dangerously in Love, the song became a major international breakthrough. It features Jay-Z and was produced by Rich Harrison and Beyoncé. The track’s instantly recognizable brass figure comes from a sample of “Are You My Woman (Tell Me So),” recorded by the Chi-Lites in 1970.

In the United Kingdom, “Crazy in Love” reached number one on the Official Singles Chart, making it Beyoncé’s first solo chart-topper there. It also topped the U.S. Billboard Hot 100 and charts in several other countries. Its success helped distinguish Beyoncé’s solo identity from her earlier work with Destiny’s Child.

The song is sometimes confused with “Baby Boy,” another Dangerously in Love single that also became a major hit. “Baby Boy” was Beyoncé’s second U.S. Billboard Hot 100 number one, but “Crazy in Love” was the first of the two to lead her solo campaign.