Jason Derulo joined Little Mix in the British group’s new single “Secret Love Song” as they performed it for the first time at Capital FM’s Jingle Bell Ball in London.

Saturday night’s special event saw Jade, Jesy, Leigh-Anne and Perrie in glamorous outfit and delivering a moving performance of the ballad. Midway through the song, “Want to Want Me” singer Jason Derulo was announced as the girls’ special guest. Check out the performance below.

The performance has drawn a lot of attention from fans as it shows another side of the group, who’s known for their upbeat hits and choreographed performances.

After the show Little Mix took to Twitter announcing they’d be promoting the song as the next single in the UK and Ireland.

Before “Secret Love Song,” Little Mix already topped the charts with “Black Magic” and “Love Me Like You”, their first two singles from latest album Get Weird.

Jason Deluro performed his own set at the Jingle Bell Ball too, though apparently battling a throat infection. On Sunday he wrote on Instagram, “London thank ya’ll 4 singing every word, I’m fighting this THROAT INFECTION & ya’ll helped me right through it. I’m back here in the same arena O2 on tour. C u n Jan/Feb.”