unpitched 

The unpitched element indicates musical elements that are notated on the staff but lack definite pitch, such as unpitched percussion and speaking voice.

Element Information

Model

display-step , display-octave
Children: display-octave, display-step

Source 

<xs:element name="unpitched" type="display-step-octave">
  <xs:annotation>
    <xs:documentation>The unpitched element indicates musical elements that are notated on the staff but lack definite pitch, such as unpitched percussion and speaking voice.</xs:documentation>
  </xs:annotation>
</xs:element>

Sample