Blue Book (CD standard) Blue Book (CD standard) The Blue Book is a compact disc standard developed in 1995 by Philips and Sony. It defines the Enhanced Music CD format (E-CD, also known as CD-Extra, CD-Plus and CD+), which combines audio tracks and data tracks on the same disc. The format was created as a way to solve the problem of mixed mode CDs, which were not properly supported by many CD players. The standard is not freely available and must be licensed from Philips. E-CDs are created through the "stamped multisession" technology, which creates two sessions on a disc. The first session of
Philips Records Symphony Orchestra conducted by Kiril Kondrashin; two albums of symphonic "bon-bons" by the London Symphony Orchestra and Charles Mackerras released as "Kaleidoscope"; "Russian Song Recital" by Galina Vishnevskaya and Mstislav Rostropovich; and Beethoven sonata op. 69 for cello and piano by Richter and Rostropovich. The Richter Liszt album was recorded on 3-track 35mm magnetic film and was reissued on CD from a remaster made from the film by original producer Wilma Cozart Fine, (wife of the late recording pioneer Bob) as part of the Philips Solo series. Classical groups that Philips heavily recorded included the Royal Concertgebouw Orchestra, the Beaux