JavaScript Variable an PHP per AJAX?

<script type="text/javascript">  
	var musicList = ;
			
	function addTomusic (addmusic) {
		musicList.push(addmusic);
		for (i = 0; i < musicList.length; i++)	{
		var newmusic = "<a class='remove' href='#' onClick='removeRecord(" + i + ");'> Löschen</a> <span class='title'>" + musicList[i] + "</span>";  
		};
		document.getElementById('musics').innerHTML += newmusic;  
		}
		function removeRecord (i) {
			musicList.splice(i, 1);
			var newmusic = "";  
			for (var i = 0; i < musicList.length; i++) {
			newmusic += "<a class='remove' href='#' onClick='removeRecord(" + i + ");'> Löschen</a> <span class='title'>" + musicList[i] + "</span>";  
			 };
		document.getElementById('musics').innerHTML = newmusic;  
	}
</script>

<form action="submit.php" id="contact" method="post">  
	<fieldset>
		<input name="name" id="name" type="text" size="20" maxlength="30" placeholder="Name eingeben"></input> <br />  
		<textarea rows="10" name="text" id="text" placeholder="Sonstige Musikwünsche"></textarea> <br />  
	</fieldset>
	<input type="submit" value="Absenden" name="submit">  
	<p class="success" style="display:none">Erfolgreich versendet.</p>  
	<p class="error" style="display:none">Fehler.</p>  
</form>