When karaoke models are now available in different sizes, shapes, and supplies, this basic structure remains exactly the same. A microphone is inserted above the player's head. He or she can transfer his mind left and right to adjust the sound quality, even though the pre-recorded song is definitely played in the background. The speaker is associated with a audio system that delivers an oral effect. On the similar time, the microphone is definitely connected to the audio system so that the vocalist can find out his speech being projected on to be able to the speaker systems. This can be the basic mechanism of the karaoke machine.