<chord>

<measure number="55">
   <note default-x="80">
      <pitch>
         <step>F</step>
         <octave>4</octave>
      </pitch>
      <duration>128</duration>
      <voice>1</voice>
      <type>whole</type>
   </note>
   <note default-x="80">
      <chord/>
      <pitch>
         <step>A</step>
         <octave>4</octave>
      </pitch>
      <duration>128</duration>
      <voice>1</voice>
      <type>whole</type>
   </note>
   <note default-x="80">
      <chord/>
      <pitch>
         <step>C</step>
         <octave>5</octave>
      </pitch>
      <duration>128</duration>
      <voice>1</voice>
      <type>whole</type>
   </note>
</measure>