Which 2008 Beyoncé song became her first solo Billboard Hot 100 No. 1 without a featured artist?

Beyoncé’s first solo Billboard Hot 100 No. 1 without a featured artist was “Single Ladies (Put a Ring on It)” in 2008.

The song was written by Christopher “Tricky” Stewart, Terius “The-Dream” Nash, Beyoncé, Thaddis Harrell, and Kuk Harrell. It became the lead single from Beyoncé’s third studio album, I Am... Sasha Fierce, and used a tightly arranged dance-pop and R&B sound.

“Single Ladies” reached No. 1 in December 2008 and remained there for seven weeks. Its black-and-white video, centered on highly synchronized choreography, became a major cultural reference and inspired many imitations.

Beyoncé had already reached No. 1 with “Check on It,” which credited Slim Thug, and with Destiny’s Child. The wording about a solo song without a featured artist distinguishes “Single Ladies” from those earlier credited collaborations.