First and last element

Task

Source document

<collection>
  <artist>
    <name>Robbie Williams</name>
    <cds>
      <cd>Rudebox</cd>
      <cd>Swing when you're winning</cd>
    </cds>
  </artist>
  <band>
    <name>Juli</name>
    <cds>
      <cd>Ein neuer Tag</cd>
    </cds>
  </band>
  <band>
    <name>Silbermond</name>
    <cds>
      <cd>Verschwende deine Zeit</cd>
    </cds>
  </band>
  <artist>
    <name>Michael Jackson</name>
    <cds>
      <cd>Bad</cd>
      <cd>Thriller</cd>
    </cds>
  </artist>
</collection>

Challenge

Output the name of the first-listed CD by the last artist in the list.

Desired selection (text output)

Bad

Exercise

Your input

Eine Lösung wäre: Lösung
Finding surrounding element Changing character stringChanging character string