|Contains a single MEI-conformant document, consisting of an MEI header and a musical text, either in isolation or as part of an meiCorpus element.|
The mei element defines an instance of a document encoded with the MEI schema. It is the document element for a single document containing a header and data. The name of this element should not be changed by any customization in order to assure an absolute minimum level of MEI compliance.
The values in @staff must correspond to @n attribute of a staffDef element.