Mood: The mood of the video appears to be sultry and romantic, with a hint of nostalgia. The theme seems to revolve around love, passion, and music, possibly set in the context of the city of Calcutta. The overall emotion evoked is one of longing and intimacy.

Environment: The setting of the video seems to be a dimly lit, possibly vintage or retro-style recording studio or a nightclub, given the presence of an old microphone. The focus on the city of Calcutta might suggest that the video could feature elements of Indian culture, music, or landmarks.