Mood: The mood of the video appears to be eerie and suspenseful, with a hint of nostalgia. The theme seems to be a revisit or a reimagining of a classic song, possibly from a horror or supernatural context, given the association with 'Bhool Bhulaiyaa 2', a known horror film. The emotion conveyed is one of intrigue and curiosity.

Environment: The setting appears to be dark and possibly indoors, with blue lighting that suggests a nighttime or a dimly lit environment. The background seems to be blurred, but it might be a corridor or a room with some architectural features visible on the left side. The overall setting seems to contribute to the suspenseful and eerie mood.