Mood: The mood of the video appears to be energetic and motivational, with a theme of music and performance. The title 'Sing Like The Rap King' suggests that the video may be a tutorial or a challenge to rap or sing like a king, evoking feelings of excitement and creativity.

Environment: The environment or setting of the video seems to be a dark or studio-like background with a focus on the performer. The presence of a microphone in the silhouette and the 'HD VIDEO' label suggests that the video may be a high-quality music or singing performance.