The fifth edition of the MPIID appeared at K. G. Saur Publishing in Munich. First published in 1996, the MPIID serves as an indispensable tool for the market of printed music world-wide. The 2004 edition of the directory offers an increase in data of about 20% compared with the last edition. Addresses and contact numbers of 17,800 publishers in 99 countries are listed, among them 1,700 digital suppliers.