Jay-Z and his wife Beyoncé Knowles reportedly sang a duet together in Paris over the weekend.

Jay-Z and Kanye West performed in the French capital over the weekend as part of their Watch the Throne concert series.

The rap icon and his wife Beyoncé celebrated the concert at an afterparty at L'Arc nightclub in Paris with Quincy Jones, actor Adrien Brody, Serena Williams, and Whitney Houston's former mentor Clive Davis.

When the DJ played I Will Always Love You, Beyoncé and Jay-Z sang along with the song at the top of their lungs.

'Jay and Beyoncé don't usually do that kind of thing, the rest of the party couldn't believe it,' a source told British newspaper The Sun.

Kanye was not in attendance at the celebration.

The musician reportedly went straight to his hotel room following his performance in order to speak with his girlfriend Kim Kardashian on Skype.