What is the difference between Compact Discs (CDs) and Music CDs?

The quality of the CD and Music CD media are the same. However, CD-R music discs are encoded with information that the CD recorder uses to identify the disc as the appropriate music media. This information is used for the creation of the file allocation table (FAT), which is where information is stored regarding the physical location of every file on the disc. The CD-R music discs also maintain copy protection and do not permit producing copies from copies.