Thanks to CD-i member Orando Arroyo and the CD+Graphics Museum we've learnt a lot more about this obscure limited format from the '80s. As you know, CD-i was compatible with CD+Graphics as well and it boosted the popularity of the format. CD-i member Videogame Obsession shows a couple of them: "Yes.. CD+G (CD+Graphics) discs. Some of the early discs used them in interesting ways. Such as displaying band info, lyrics, trivia, and liner notes. It was a very limited format, in terms of colors, and graphics being displayed, but I still like weird formats like this!" CD-i member Seventy7: "Cd+G is a neat technology. There's countless of them on ebay since it was the main karaoke format for years. The graphics part is in the subchannels. CD+Graphics is one of the compatible formats of your CD-i player, just like Photo CD and Video CD.
CD+G (also known as CD-G, CD+Graphics and TV-Graphics) is an extension of the compact disc standard that can present low-resolution graphics alongside the audio data on the disc when played on a compatible device. CD+G discs are often used for karaoke machines, which use this functionality to present on-screen lyrics for the song contained on the disc. The CD+G specifications were published by Philips and Sony in an updated revision of the Red Book specifications. Along with dedicated Karaoke machines, other consumer devices that play CD+G format CDs include the NEC TurboGrafx-CD, the Philips CD-i, the Sega CD, Sega Saturn, the 3DO Interactive Multiplayer, the Amiga CD32 and Commodore CDTV, and the Atari Jaguar CD. Since 2003, some standalone DVD players have supported the CD+G format.
[Thanks, Videogame Obsession, Orlando Arroyo, Laucessy (pictures)]