The band Maroon 5 decided to appear uninvited at three weddings the same day in Los Angeles. The cameras were ready and the result became their new music video.

At each wedding, a scene had been erected with a white screen in front, so the bridesmaids did not know what to see. Most likely, they had expected a regular wedding band. But when the cloud drops and the band begins to play, the reactions are huge. As the dot of the song, the song is actually swinging, and the couples are in ecstasy. Look yourself!
Source: Rollingstone.com