Each music is normally recorded with its own Video background. Some are recorded with and some without Lyrics. Some are recorded in Multiplex and some are not.

The Multiplex functions are:

  1. Sing Along With Vocal (to learn singing)
  2. Vocal Can be Removed (to practice singing)
  3. Vocal Partner (When You Sing, Vocal Stops; When you stop Singing, Vocal Comes Back)

If they are recorded on a Disc, their Music Quality cannot be expected to be the same as MP3+G