68–319)</td>            
          </tr>
          <tr>
            <td/>
            <td>Voices in unison</td>
            <td>(HartW 320–322)</td>
          </tr>
          <tr>
            <td colspan="3">Songs</td>
          </tr>
          <tr>
            <td/>
            <td>For one voice</td>
            <td>(HartW 323–505)</td>
          </tr>
          <tr>
            <td/>
            <td>For two voices</td>
            <td>(HartW 506–510)</td>
          </tr>
      