Mood: The mood of the video appears to be romantic and upbeat, with a sense of glamour and sophistication. The theme seems to revolve around love and relationships, with the title 'Every Night and Day' suggesting a longing or devotion to someone. The overall emotion conveyed is one of passion and energy.

Environment: The setting of the video appears to be a live performance or concert, with a cityscape at night serving as a backdrop. The stage is likely a high-end venue, given the formal attire of the performers and the presence of a microphone and audience silhouettes. The background is a blurred cityscape with many lights, creating a sense of excitement and urban energy.