The Blue Book defines the Enhanced Music CD specification for multisession pressed disc (i.e. not recordable) comprising audio and data sessions. These discs are intended to be played on any CD audio player, on PCs and on future custom designed players. The Blue Book comprises:
- Disc specification and data format including the two sessions (audio and data)
- Directory structure (to ISO 9660) including the directories for CD Extra information, pictures and data. It also defines the format of the CD Plus information files, picture file formats and other codes and file formats
- MPEG still picture data format.
Otherwise known as CD-Extra or CD-Plus, Blue Book CDs contain a mix of data and audio, recorded in separate sessions to prevent data tracks being played on and possibly damaging home hi-fis.
- CD-ROM Red Book
- CD-ROM Yellow Book
- CD-ROM XA
- CD-ROM Green Book
- CD-ROM Orange Book
- CD-ROM White Book
- CD-ROM Blue Book
- CD-ROM Purple Book
- CD-ROM CD-I Bridge
- CD-ROM Photo CD
- CD-ROM File Systems
- CD-ROM Manufacturing
- CD-ROM The Disc
- CD-ROM Operations
- CD-ROM Digital Audio
- CD-ROM CLV
- CD-ROM CAV
- CD-ROM Applications
- CD-ROM Interfaces
- CD-ROM DMA vs. PIO Mode
- CD-ROM TrueX Technology