Punk-rock subgenre (3)
I believe the answer is:
emo
I believe this clue is a double definition.
'punk' is the first definition.
(I know that emo is a type of post-hardcore)
'rock subgenre' is the second definition.
(I've seen this in another clue)
(Other definitions for emo that I've seen before include "music?" , "Serious type of rock" , "Town and Court in Laois" .)