<?xml version="1.0" encoding="UTF-8"?>
<!-- INVALID: Two notes share an id. Ids are unique within their own kind,
     the same rule as part and section ids, extended to note. -->
<thai-score xmlns="https://thaimusicxml.anan.ovh/ns/1" version="1.0">
  <header><title>Invalid example</title></header>
  <structure><section id="s1"/></structure>
  <ensemble>
    <part id="P1"><instrument-name>ระนาดเอก</instrument-name></part>
  </ensemble>
  <part-data part="P1">
    <section-ref section="s1">
      <line number="1">
        <measure number="1">
          <note pitch="ด" id="n1"/>
          <note pitch="ร" id="n1"/>
        </measure>
      </line>
    </section-ref>
  </part-data>
</thai-score>
