Song of loyalty (6)
I believe the answer is:
anthem
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">song of loyalty</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for anthem that I've seen before include "Song in praise of a nation" , "Solemn song" , "Uplifting music" , "Hymn of loyalty" , "National melody" .)