Red Book Audio
Uses Red Book audio for music, the same audio format used by common music/audio CDs and therefore could be listened on regular CD players without any additional effort.
Alternate names: Compact Disc Digital Audio, CDDA
Name variations: Mixed Mode CD
The first video game about Red Book Audio was released on November 11, 1994.
* Media in drive
Other games provided music in other additional format(s) if the player wanted to in addition to Redbook, such as midi, removing the need for the CD to be in drive.