More hurt by composer’s catchy intro fading (5)
I believe the answer is:
sorer
'composer's catchy intro fading' is the definition.
I can't tell whether this definition defines the answer.
'more hurt' is the wordplay.
I cannot quite understand how this works, but
'hurt' could be 'sore' (I've seen this before) and 'sore' is found in the answer.
A single letter 'r' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
'by' is the link.
Can you help me to learn more?
(Other definitions for sorer that I've seen before include "Comparatively vexed" , "more upset" , "more resentful" , "More painful or vexed" .)