Gerar xml com "cabeçalho"

Pessoal to gerando um xml corretamente, mas preciso que ele gere tipo um cabeçalho antes de gerar os elementos. a seguir vai o códigos.

// aqui gera o xml
function addContato($document, $nome, $fone, $end)
{
#criar contato

$contato = $document->createElement("track");
$location = $document->createElement("location", $nome);
$creator = $document->createElement("creator", $nome);
$album = $document->createElement("album", $fone);
$title = $document->createElement("title", $end);
$annotation = $document->createElement("annotation", $end);
$duration = $document->createElement("duration", $end);
$image = $document->createElement("image", $end);
$info = $document->createElement("info", $end);
$link = $document->createElement("link", $end);

$contato->appendChild($location);
$contato->appendChild($creator);
$contato->appendChild($album);
$contato->appendChild($title);
$contato->appendChild($annotation);
$contato->appendChild($duration);
$contato->appendChild($image);
$contato->appendChild($info);
$contato->appendChild($link);
return $contato;
}

$dom = new DOMDocument("1.0", "UTF-8");

$dom->preserveWhiteSpace = false;
$dom->formatOutput = true;
$root = $dom->createElement("playList");
$root = $dom->createElement("trackList");

#utilizando a funcao para criar contatos

$Tiao = addContato($dom, "Tiao J.", "5555-4444", "R. Jaú, 3");
$Joao = addContato($dom, "Joao S.", "4444-5555", "R. Itú, 4");

#adicionando no root

$root->appendChild($Tiao);
$root->appendChild($Joao);
$dom->appendChild($root);

#salvando o arquivo
$dom->save("playlist_gerado.xml");

#mostrar dados na tela

header("Content-Type: text/xml");
print $dom->saveXML();

?>

aqui o xml gerado

<?xml version="1.0" encoding="UTF-8"?>
<trackList>
 <track>
 <location>Tiao J.</location>
 <creator>Tiao J.</creator>
 <album>5555-4444</album>
 <title>R. Jaú, 3</title>
 <annotation>R. Jaú, 3</annotation>
 <duration>R. Jaú, 3</duration>
 <image>R. Jaú, 3</image>
 <info>R. Jaú, 3</info>
 <link>R. Jaú, 3</link>
 </track>
 <track>
 <location>Joao S.</location>
 <creator>Joao S.</creator>
 <album>4444-5555</album>
 <title>R. Itú, 4</title>
 <annotation>R. Itú, 4</annotation>
 <duration>R. Itú, 4</duration>
 <image>R. Itú, 4</image>
 <info>R. Itú, 4</info>
 <link>R. Itú, 4</link>
 </track>
</trackList>

e aqui como ele precisa ficar

<?xml version="1.0" encoding="UTF-8"?>
<playlist version="1" xmlns="http://xspf.org/ns/0/">
 <title>Ounage Playlist</title>
 <creator>Dew</creator>
 <link>http://www.blup.fr/</link>
 <info>The Best Playlist</info>
 <image>covers/0.jpg</image>

 <trackList>

 <track>
 <location>mp3/test1.mp3</location>
 <creator>Bedrich Smetana</creator>
 <album>Má Vlast</album>
 <title>La Moldau (Vltava)</title>
 <annotation>I love this song</annotation>
 <duration>32000</duration>
 <image>covers/1.jpg</image>
 <info></info>
 <link>http://fr.wikipedia.org/wiki/M%C3%A1_Vlast_(Smetana)</link>
 </track>

 <track>
 <location>mp3/test2.mp3</location>
 <creator>Antonin Dvorak</creator>
 <album>La Symphonie du Nouveau Monde</album>
 <title>La Symphonie du Nouveau Monde</title>
 <annotation></annotation>
 <duration></duration>
 <image>covers/2.jpg</image>
 <info></info>
 <link>http://fr.wikipedia.org/wiki/Cesaria_Evora</link>
 </track>

 <track>
 <location>mp3/test3.mp3</location>
 <creator>Jean-Claude Petit</creator>
 <album>Le Hussard sur le Toit</album>
 <title>Le Hussard sur le Toit</title>
 <annotation></annotation>
 <duration></duration>
 <image>covers/3.jpg</image>
 <info></info>
 <link>http://fr.wikipedia.org/wiki/Le_Hussard_sur_le_toit_%28film%29</link>
 </track>

 </trackList>
</playlist>

Eu preciso criar aqueles itens antes dos nós filhos.

Valewww