Sombr, who is currently busy with his major international, The Late Nights & Young Romance Toursurprised his fans with an unexpected guest.

The singer gained massive attention after his song Back To Friends hit maker went viral on social media and has been achieving new goals every day.

At his first headlining show at London’s O2 Academy Brixton, the songwriter invited the former member of English–Irish pop band, One Direction, Niall Horan.

The duo celebrated the 20-year-old’s rising fame as they sang the global superstar’s single from his first album, Slow Hands.

The union of the two has made quite an uproar on the internet as the fans went in a frenzy.

This comes after the Nothing Left to Say crooner covered Nial’s song, This Towntwo days prior, gaining the mentor’s attention.

The netizens also described the unexpected performance as “duo we never knew we needed” with few sparking the rumours that they must be “cooking” something.