Director creates music around sets, releasing tension (8)
I believe the answer is:
scorsese
'director' is the definition.
(Martin Scorsese director)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for scorsese that I've seen before include "Hit (by an idea)" , "Martin . . . . . . . ., film-maker" , "Martin -, US film director (Taxi Driver)" , "Martin ___, director of Goodfellas and Raging Bull" .)