Mood: The mood of the video seems to be romantic and intimate, with a sense of longing. The title 'PYAAR AA GAYA' which translates to 'Love has arrived' or 'Fell in love', suggests that the video may be about falling in love or a romantic connection. The overall theme appears to be love, relationships, and emotions.

Environment: The setting of the video appears to be a dimly lit or evening setting, possibly a indoor location with stage lights or a concert setting, given the presence of bright lights in the background. The ambiance seems to be calm and serene, with a focus on the artist's performance.