Mood: The mood of the video appears to be nostalgic and musical, with a theme of behind-the-scenes or making-of content for a popular song. The presence of a cassette tape and the title 'Making of Kaise Mujhe Tum Ho' suggests a focus on music and the creative process. The overall tone seems to be upbeat and engaging, with a sense of excitement and energy.

Environment: The environment appears to be a music studio or a live performance setting, with a stage, microphones, and musical instruments visible in the background. The blue and purple lighting creates a lively and vibrant atmosphere, suggesting a dynamic and creative space. The presence of a staircase and a band in the background adds to the sense of a live performance or recording setting.