Version 4.1 Draft

Draft

The <part-symbol> element now has cardinality 0..N instead of 0..1, to allow grouping staves in multiple groups within a part. (Issue 572)
The <coda> and <segno> elements in <barline> now have cardinality 0..N instead of 0..1, same as their cardinality within <direction-type>. (Issue 653)
The <accidental> and <key-accidental> elements now have cardinality 0..N instead of 0..1, to support microtonal music. (Issue 605)
The <voice-direction> element distinguishes between upper and lower voices on a staff. The <voice-directions> element contains multiple <voice-direction> entries. (Issue 662)

The @number attribute has been added to the <harmonic> element to accommodate multiple harmonics per chord. (Issue 529)

The timewise format and <score-timewise> element are now deprecated. (Issue 483)

The “Hello World” in MusicXML tutorial reflects the deprecation of XML Document Type Definition (DTD) files in favor of XML Schema Definition (XSD) files.
The <beam>/@fan attribute documentation clarifies multi-level beam usage. (Issue 663)
The <senza-misura> element documentation clarifies the expected symbol values. (Issue 643)
The <rest> and <display-step> elements documentation clarify the vertical alignment for rest symbols in relation to their SMuFL glyphs. (Issue 681)
The <time>/@symbol attribute and associated time-symbol data type documentation clarifies the meaning of the “single-number” value. (Issue 641)
The usage of <supports type="no"> is clarified, especially in the context of absence of <accidental>. (Issue 664)
Removed mention of ISO 639 for languages codes, and updated xml.xsd to the latest version http://www.w3.org/2009/01/xml.xsd. (Issue 573)