Not getting posts of custom post types

You really have two major flaws in your code:

• query_posts needs to go before your loop, not inside it

• Never use query_posts in the first place unless you need to break something on your page

To learn why not to use query_posts and when to use a custom query and how to use it, check this post I have done a while ago

So, in order to correct your code in your template, we are going to make use of WP_Query and not query_posts, and we are going to do the query before the loop

Try something like this:

<?php 
 /* Template Name: song Page
 *
 * Selectable from a dropdown menu on the edit page screen.
 */
?>

<?php get_header(); ?>

<div>

    <?php 
    $args = array(
        'post_type' => 'song'
    );
    $q = new WP_Query($args);
    if ( $q->have_posts() ) {
        while ( $q->have_posts() ) {
            $q->the_post(); 

            //Add your template tags like below
            the_title();

        } // end while
        wp_reset_postdata();
    } // end if
    ?>

</div>

Also, never forget to reset custom queries if you have used the loop or setup_postdata($post) with wp_reset_postdata()