Mood: The mood of the video appears to be energetic and celebratory, with a sense of tribute and respect. The theme seems to be a musical performance or competition, possibly a reality TV show, paying homage to Shri Gulshan Kumar. The overall emotion conveyed is one of excitement and anticipation.

Environment: The setting appears to be a stage, likely a television studio or a concert venue, with a dark background and bright lights. The presence of a microphone and a performer suggests a live performance or recording. The atmosphere seems to be lively and engaging, with a sense of a large audience or a significant event.