Reporter of latest music captivating hearts (9)
I believe the answer is:
newshound
'reporter' is the definition.
(I've seen this in another clue)
'latest music captivating hearts' is the wordplay.
'latest' becomes 'new'.
'music' becomes 'sound' (I can't explain this - if you can you should believe this answer much more).
'captivating' means one lot of letters goes inside another (captivate could historically mean to hold captive).
'hearts' becomes 'h' (abbreviation used in card games e.g. bridge).
'sound' going around 'h' is 'shound'.
'new'+'shound'='NEWSHOUND'
'of' is the link.
Can you help me to learn more?
(Other definitions for newshound that I've seen before include "read this person's reports?" , "American journalist" , "Paper reporter" , "He's after a story" , "assiduous seeker of stories" .)