The play type specifies playback techniques to be used in conjunction with the instrument-sound element. When used as part of a sound element, it applies to all notes going forward in score order. In multi-instrument parts, the affected instrument should be specified using the id attribute. When used as part of a note element, it applies to the current note only.
The
<play>element.The play type specifies playback techniques to be used in conjunction with the instrument-sound element. When used as part of a sound element, it applies to all notes going forward in score order. In multi-instrument parts, the affected instrument should be specified using the id attribute. When used as part of a note element, it applies to the current note only.
See
https://www.w3.org/2021/06/musicxml40/musicxml-reference/elements/play/