Hip-hop songs (4)
I believe the answer is:
raps
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hip-hop songs</span>' is the definition.<br/ ><span class="explanation-format__explanation">(hip-hop usually features rapping)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for raps that I've seen before include "'Knocks, on the door say (4)'" , "Cracks" , "Knocks sharply" , "Sprechgesang pop hits" .)