/**
 * Template Redirect
 * Use template_singular-parallax.php for Posts and Pages.
 */
add_filter( 'template_include', 'custom_singular_template', 99 );
function custom_singular_template( $template ) {

	if ( is_singular( array( 'post', 'page' ) ) && ! is_front_page() ) {
		$new_template = locate_template( array( 'template_singular-parallax.php' ) );
		if ( '' != $new_template ) {
			return $new_template ;
		}
	}

	return $template;
}