Very hot playing (6)
I believe the answer is:
piping
This clue is a double definition.
'very hot' is the first definition.
(I've seen this before)
'playing' is the second definition.
(piping is a kind of playing)
(Other definitions for piping that I've seen before include "Lengths of tube" , "Tube; very hot" , "Metal or plastic tubing, or trimming on garment" , "The playing" , "Long tubes" .)