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
Obbe Philips Obbe Philips Obbe Philips (ca. 1500–1568) (also spelled "Philipsz" and "Filips") was one of the early founders of Dutch Anabaptism. He was the illegitimate son of a Roman Catholic priest from Leeuwarden. Philips studied medicine, and became a barber and a surgeon. He married in 1530 and set up his business in Leeuwarden. Obbe Philips became interested in the Reformation, and converted to Anabaptism late in 1533. He was probably baptized by Bartholomeus Boekbinder or Willem de Kuyper, emissaries of Jan Matthys. Menno Simons was ordained around 1537 by Obbe Philips, and was probably baptized earlier by Philips also. Obbe