The for-part element is used in a concert score to indicate the transposition for a transposed part created from that score. It is only used in score files that contain a concert-score element in the defaults. This allows concert scores with transposed parts to be represented in a single uncompressed MusicXML file.
The
<for-part>element.The for-part element is used in a concert score to indicate the transposition for a transposed part created from that score. It is only used in score files that contain a concert-score element in the defaults. This allows concert scores with transposed parts to be represented in a single uncompressed MusicXML file.
See
https://www.w3.org/2021/06/musicxml40/musicxml-reference/elements/for-part/