By default, an assessment application should assess all notes without a cue child element, and not assess any note with a cue child element. The assess type allows this default assessment to be overridden for individual notes. The optional player and time-only attributes restrict the type to apply to a single player or set of times through a repeated section, respectively. If missing, the type applies to all players or all times through the repeated section, respectively. The player attribute references the id attribute of a player element defined within the matching score-part.
The
<assess>element.By default, an assessment application should assess all notes without a cue child element, and not assess any note with a cue child element. The assess type allows this default assessment to be overridden for individual notes. The optional player and time-only attributes restrict the type to apply to a single player or set of times through a repeated section, respectively. If missing, the type applies to all players or all times through the repeated section, respectively. The player attribute references the id attribute of a player element defined within the matching score-part.
See
https://www.w3.org/2021/06/musicxml40/musicxml-reference/elements/assess/