Mood: The mood of the video appears to be energetic and vibrant, with a sense of excitement and anticipation. The theme seems to be related to dance, given the title and the presence of a dance-related show 'DID Little Masters'. The overall emotion evoked is one of enthusiasm and eagerness, likely building up to a dance competition or performance.

Environment: The setting appears to be a stage or a performance area, likely a dance studio or a theater, given the presence of speakers and a disco ball-like background. The environment seems to be a lively and dynamic one, with bright colors and flashing lights, suggesting a high-energy performance or competition.