"O Canada," for one (6)
I believe the answer is:
anthem
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">o canada for one</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for anthem that I've seen before include "Church choral piece" , "Uplifting song -- the man (anag)" , "The man for a popular song" , "air of patriotism?" , "Solemn song" .)