The rapper covered the pop star's hit song "Stay" in front of a sold-out crowd shortly after singing his song "Too Much."
Fans went wild as they heard his version, which included a few attempts to sing in French and German as well.
Drake and Rihanna have been spending an increasing amount of time together in Europe while he is touring.
The "Take Care" singers were spotted out on a dinner date in Amsterdam late last week and then seen out and about in London over the weekend.
And shortly before their outing in Amsterdam, the two were seen getting cozy in Paris.
They spent time together at the Soixante Dix Neuf nightclub in Paris, where Drake was on hand to help the venue celebrate its first birthday.
Of course, this was after she popped up for a surprise performance at Drake's concert in the City of Light and grinded on him on stage.
Drizzy and RiRi's onstage chemistry brought the house down, and did little to hide the fact that they're probably more than just friends.
In his latest interview, Drake referred to the Bajan beauty as "the ultimate fantasy," however, they have both insisted that their relationship is strictly platonic.