"Black Magic" and "Want To Want Me" were two of the biggest songs of 2015, a fact that makes Little Mix and Jason Derulo some of the most notable artists of the year as well.

So what happens when the two come together for an unstoppable performance of Little Mix's "Secret Love Song"? Magic.

Saturday night, Derulo joined Little Mix onstage at Capital FM's Jingle Bell Ball in London for a chandelier-quaking take on the group's Get Weird track that they later revealed would be the next single from the album in the U.K. and Ireland.

Derulo performed his own set at the gig, too, all the while apparently battling a throat infection. "London thank ya'll 4 singing every word, I'm fighting this THROAT INFECTION & ya'll helped me right through it," he wrote on Instagram. "I'm back here in the same arena O2 on tour. C u n Jan/Feb."

In the meantime, we have this "Secret Love Song" to hold us over.