Mood: The mood of the video appears to be nostalgic and celebratory, highlighting the musical contributions of Himesh. The theme seems to be a musical compilation or tribute, given the title '101 Hits'. The emotion evoked is likely to be joy and a sense of musical journey through Himesh's discography.

Environment: The setting seems to be a studio or a performance space, given the presence of a microphone. However, the monochromatic color scheme and focus on the artist suggest a more intimate and stripped-down environment, possibly indicating a recording studio or a minimalist stage setting.