Musical; board game (5)
I believe the answer is:
chess
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">musical</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(Benny Andersson and Bjrn Ulvaeus musical)</span><br/ ><br/ >'<span class="explanation-format__original">board game</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that chess is a type of board game)</span><br/ ><br/ ></span>
(Other definitions for chess that I've seen before include "This is played on board" , "activity aimed at downfall of a king" , "Benny Andersson and Bjorn Ulvaeus musical" , "Ancient war game whose name may have derived for the Persian for 'king'" , "Pure-skill board game" .)