Liam Payne had a surprise in store for some unsuspecting Londoners Monday.

The former One Direction singer was joined by Zedd for an impromptu performance of “Get Low” in Trafalgar Square for a crowd of excited onlookers.

Payne song, while Zedd played a portable keyboard and a crew of dancers backed them up with a choreographed routine.

Zedd announced the performance on Twitter to his London fans 10 minutes before showtime.

One tweet from the special min-event showed a camera crew, perhaps filming the duo for an upcoming music video.

Payne also took the time to meet some fans.