<figure {{ with .Get "class" }}class="{{ . }}"{{ end }}> <audio controls preload="{{ .Get "preload" | default "metadata" }}"> {{ with .Get "src" }}<source src="{{ . }}" type="audio/mpeg">{{ end }} </audio> {{ with .Get "caption" }}<figcaption><h4>{{ . }}</h4></figcaption>{{ end }} </figure>