มันแจ้งError :Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource in C:\AppServ\www\PhpProject\store\connect\inc\music.inc.php on line 11

<?php
function fetch_music(){
	$sql = "SELECT
				'id',
				'artist'
			FROM 'music'";
	$result = mysql_query($sql);
	
	$music = array();
	
	while(($row = mysql_fetch_assoc($result)) !== false){
		$music[$row['id']] = $row['artist'];
	}
	
	return $music;
	
}
?>