The tie element indicates that a tie begins or ends with this note. If the tie element applies only particular times through a repeat, the time-only attribute indicates which times to apply it. The tie element indicates sound; the tied element indicates notation.
The
<tie>element.The tie element indicates that a tie begins or ends with this note. If the tie element applies only particular times through a repeat, the time-only attribute indicates which times to apply it. The tie element indicates sound; the tied element indicates notation.
See
https://www.w3.org/2021/06/musicxml40/musicxml-reference/elements/tie/