Abstract: A scoring device for an karaoke system is provided. The scoring device includes a first detector for the original singer, a second detector for the karaoke singer, and a processor. The first detector is provided to detect the volume of the original singer's singing voice. The second detector is provided to detect the volume of the karaoke singer's singing voice. The processor is provided to compare the volumes of the original singer's singing voice and the karaoke singer's singing voice, and provides a score for the karaoke singer's singing voice based on the compared results.