Branch menu as submenu with excluded sub(-sub)pages, displayed on one level

Thank you texnixe, this worked indeed, but only for ONE template. “filterBy” cannot be used with two templates, as far as I understood?

<?php if(!isset($subpages)) $subpages = $pages->find('artists')->children() ?>
<ul>
  <?php foreach($subpages->visible()->filterBy('template', '!=', 'blogarticle') as $p): ?>
  <li>
    <a<?php echo ($p->isActive()) ? '
	     class="active"' : '' ?> href="<?php echo $p->url() ?>"><?php echo $p->title() ?></a>
    <?php if($p->hasChildren()): ?>
    <?php snippet('treemenu', array('subpages' => $p->children())) ?>
    <?php endif ?>
  </li>
  <?php endforeach ?>
</ul>