Which singer joined Beyoncé on the song “Telephone”?

Lady Gaga joined Beyoncé on the song “Telephone.”

“Telephone” was released in 2010 as a single from Lady Gaga’s extended play The Fame Monster. Gaga wrote the song with Rodney Jerkins, LaShawn Daniels, Lazonate Franklin, and Beyoncé. The recording combines Gaga’s electronic pop style with Beyoncé’s vocal performance and became a major international hit.

The song’s music video continues a narrative introduced in Gaga’s video for “Paparazzi.” It features both singers in a stylized crime-and-road-trip story, with Beyoncé playing the character Honey Bee. The video is known for its long runtime and cinematic presentation.

“Telephone” is sometimes mistaken for a Beyoncé album track because of her prominent role, but it is officially a Lady Gaga single featuring Beyoncé. It followed their earlier collaboration on “Video Phone,” which appeared on Beyoncé’s I Am... Sasha Fierce and Gaga’s The Fame Monster era.