{%- assign isFirst = true -%} {%- for artistName in song.artists -%} {%- if isFirst == true -%} {%- assign isFirst = false -%} {%- else -%} , {% comment %} Comma and space to separate artists {% endcomment %} {%- endif -%} {%- assign artist = site.data.artists | where: 'sname', artistName | first -%} {%- if artist -%} {{ artist.sname }} {%- else -%} {{ artistName }} {%- endif -%} {%- endfor -%} {% comment %} Space needed {% endcomment %} - {{ song.sname }}