Enhanced CD

Enhanced CD is a generic term for hybrid Audio and Data CDs which can be played in compatible CD-DA Compact Disc Digital Audio and CD-ROM Compact Disc Read Only Memory players. Examples of valid Enhanced CDs include Mixed Mode CDs, Multisession Multisession Compact Disc CDs ('Blue Book', 'CD Plus', 'CD Extra', 'Enhanced Music CD'), and Single Session Enhanced CDs (e.g. CD-I Compact Disc Interactive Bridge discs, also known as the pregap method). The Recording Industry Association of America published an "Enhanced CD" certification mark that it recommends for use on any of these discs.