Communicating the name of a writer of a Musical Work is an important part of a number of DDEX messages – specifically: ERN, RIN, DSR and the various messages to support the licensing of Musical Works. There are, several aspects to writing a Musical Work that DDEX messages can differentiate: 

 

These four cases can be communicated in all standards published in 2020 or later with four role codes: LyricistComposerComposerLyricist and ComposerAndOrLyricist

In older versions of DDEX standards only three values, LyricistComposerComposerLyricist, are available. When using those standards it is suggested to use a ComposerAndOrLyricist as a user-defined value as described on https://kb.ddex.net/display/HBK/User-defined+Values.

Note: DDEX of course also supports additional Musical Work-related roles such as Adapater and Arranger.