{{ entries:listing folder="bands" }}
    {{ entries:listing folder="events" condition="lineup:{ title }" }}
        {{ meta }}
            {{ datum format="d.m.Y" }} - {{ venue }}{{ name }}{{ /venue }}
        {{ /meta }}
    {{ /entries:listing }}
{{ /entries:listing }}

prints looped_tags_689a584f8871eb0a1f660aa87a84722f in the view

 {{ entries:listing folder="events" condition="lineup:{ title }" }}
        {{ if !no_results }}
            {{ meta }}
                {{ datum format="d.m.Y" }} - {{ venue }}{{ name }}{{ /venue }}
            {{ /meta }}
        {{ /if }}
    {{ /entries:listing }}
{{ /entries:listing }}

prints {{ if !no_results }} looped_tags_689a584f8871eb0a1f660aa87a84722f {{ /if }}