Jazz enthusiast has to suppress cause of pain in release of emotions (9)
I believe the answer is:
catharsis
'release of emotions' is the definition.
'catharsis' can be an answer for 'release' (I've seen this before). I'm not certain of the 'of emotions' bit.
'jazz enthusiast has to suppress cause of pain' is the wordplay.
'jazz enthusiast' becomes 'cat' (I've seen this in another clue).
'to suppress' indicates putting letters inside (inserted letters are suppressed or crushed).
'cause of pain' becomes 'rsi' (I can't explain this - if you can you should believe this answer much more).
'has' going around 'rsi' is 'harsis'.
'cat'+'harsis'='CATHARSIS'
'in' is the link.
Can you help me to learn more?
(Other definitions for catharsis that I've seen before include "The release of pent-up emotions" , "purging process" , "Process of releasing pent-up emotions" , "Emotional release" , "Purification - is rash act (anag)" .)