Cover Pages: XML and MusicMarkup Initiatives Several initiatives have addressed the need for a standardized markup-based music notation. Some examples: SMDL - Standard Music Description Language SMDL standardization is organized by Working Group 3 of ISO/IEC JTC1/SC34 (Information Association). "The Standard Music Description Language (SMDL), an application of the HyTime Hypermedia/Time-based document structuring facilitie
