A time_signature_type record holds the data for the xs:group time-signature in the MusicXML schema.

A list of time_signature_type records belongs to a time table record when the time_type is time signature. The foreign key in time_signature_type is time_signature_id.

An interchangeable type can also have a list of time_signature_type records. The foreign key in time_signature_type is interchangeable_id.