Karaoke is a popular form of entertainment often used at parties, restaurants and bars where someone will sing along to recorded music using a microphone and public address system. The singer can choose from a number of well-known pop and rock songs available on the machine and then sing while the machine plays the song, minus the lead vocals. A video screen displays the lyrics of the song and guides the singer, usually by changing the color of the words or using a moving symbol so they sing…