Format adding graphics to CD-DA in reserved subcode bits R-W (6 bits per frame, 20 MB per disc). Primarily used for Karaoke.
Compact Disc Plus Graphics. A special digital audio disc format that combines a standard CD-DA track with graphic and text subchannels.
A CD+G is a specially formatted disc that has an additional line of sub-code on the CD that is responsible for the lyrics that play on video screen for Karaoke systems. CD+G stands for Compact Disc + Graphics.