Son's intro to record, memorable without being irritating (8)
I believe the answer is:
scratchy
'being irritating' is the definition.
(thesaurus)
'son's intro to record memorable without' is the wordplay.
'intro to' suggests taking the first letters (I've seen 'intros to' mean this).
'memorable' becomes 'catchy' (something catchy is easy to remember).
'without' is an insertion indicator.
The first letter of 'record' is 'r'.
'r' going within 'catchy' is 'cratchy'.
's'+'cratchy'='SCRATCHY'
(Other definitions for scratchy that I've seen before include "Irritable" , "(Of a voice) rough and grating" , "bad-tempered" , "Like many an old record" , "Playing badly" .)