<strong-accent>

<measure number="17">
   <note>
      <pitch>
         <step>C</step>
         <octave>5</octave>
      </pitch>
      <duration>8</duration>
      <voice>1</voice>
      <type>quarter</type>
      <stem default-y="-50">down</stem>
      <notations>
         <articulations>
            <strong-accent type="up" placement="above"/>
         </articulations>
      </notations>
   </note>
   <note>
      <pitch>
         <step>G</step>
         <octave>4</octave>
      </pitch>
      <duration>8</duration>
      <voice>1</voice>
      <type>quarter</type>
      <stem default-y="5">up</stem>
      <notations>
         <articulations>
            <strong-accent type="down" placement="below"/>
         </articulations>
      </notations>
   </note>
</measure>