You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allredirects garcontinue="Laptop_Orchestra_of_the_Left" />
  </query-continue>
  <query>
    <pages>
      <page pageid="2177" ns="0" title="CCRMA IPL Studio C User Guide" />
      <page pageid="1342" ns="0" title="CCRMA Studio Guides" />
      <page pageid="1" ns="0" title="Center for Computer Research in Music and Acoustics" />
      <page pageid="1559" ns="0" title="ChucKu" />
      <page pageid="2051" ns="0" title="DIA" />
      <page pageid="1694" ns="0" title="Delete me1" />
      <page pageid="2053" ns="0" title="Dia" />
      <page pageid="3405" ns="0" title="Elephant Letters" />
      <page pageid="3350" ns="0" title="Feedback Shift II" />
      <page pageid="1657" ns="0" title="LOL" />
    </pages>
  </query>
</api>