What is a Multiplex CDG?
A Multiplex or Vocal Demonstration Discs refers to a disc that contains a lead demonstration or guide vocal, performed by a studio singer. It allows you to sing along or practice with the singer while learning the songs melody. Most every multiplex disc today contains 2 versions of the song on the same disc. One version with a vocal demonstration to help you learn the song while the other track is an instrumental only version with back-up vocals. Some of these discs also come with printed lyric booklets. Note the Back-up Vocals cannot be removed from this disc.
