Lively old dance (5)
I believe the answer is:
galop
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">lively old dance</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 galop that I've seen before include "Couple dance" , "Lively ballroom dance" , "Nineteenth-century dance" , "dance music" .)