source: https://www.w3.org/2021/06/musicxml40/musicxml-reference/elements/group-time/
MusicXML 4.0 >
MusicXML reference >
Elements >
group-time
Parent element:
<part-group>
The element indicates that the displayed time signatures should stretch across all parts and staves in the group.
Always empty.
None.
This element is used in the following examples: