Karaoke Player
A karaoke player is an entertaining device that was originally developed in Japan in the 1970s and has since attained a cult like status around the world. People practice their songs for the weekend when they belt them out in front of an audience of drunken patrons, many of whom will be taking their turn at it shortly.
The karaoke player is not a complex machine but it has a few requirements to function correctly. Special music that has the vocal track ripped from the instrumental has to be used and it also has to display those missing lyrics for the patron to sing along with. This requires a special graphic audio format called CD-G.
A modern karaoke player that uses CD will be able to recognize the graphic interchange and when connected to a screen displays the lyrics to the song before they are meant to be sung, and it slowly lights the lyrics when those words are meant to be sung. A microphone is used to amplify the singers voice to the same level as the music accompaniment.