Short compositions for solo instruments (6)
I believe the answer is:
etudes
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">short compositions for solo instruments</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for etudes that I've seen before include "Set due in short musical compositions" , "Short compositions for solo instruments" , "Musical exercises (Fr.)" , "Short pieces for solo instruments to show talent" , "Musical studies" .)