function contributors() {

global $wpdb;

$authors = $wpdb->get_results("SELECT ID, user_nicename from $wpdb->users WHERE display_name <> 'admin' ORDER BY display_name");
$categoryHandle = get_the_author_meta('ArtistCategory');

foreach ($authors as $author ) {

echo "<li>";
echo "<a href=\"".get_bloginfo('url')."/artist/";
the_author_meta('user_nicename', $author->ID);
echo "/\">";
the_author_meta('display_name', $author->ID);
echo " (";
the_author_meta('ArtistCategory', $author->ID);
echo ")";
echo "</a>";
echo "</li>";
}
}