I believe the music video is from the 2000s, and the lead singer is male.
The video is in colour and features couples in retro clothes registering for a dance competition where the style is something like Jive. The competition, as it turns out, is more of endurance. People do get breaks to eat and drink, etc, but otherwise the point is to keep dancing until you can’t keep going and several couples get disqualified like this.
Eventually only one couple is left, and they finish the music video by stepping off the boat or ledge of where the competition is taking place.