The LP I reviewed grabs a record collector (11)
I believe the answer is:
philatelist
'collector' is the definition.
(philatelist is a kind of collector)
'the lp i reviewed grabs a record' is the wordplay.
'reviewed' is an anagram indicator (To look at again and re view).
'grabs' indicates putting letters inside.
'record' becomes 'list' (I've seen this before**).
'the'+'lp'+'i'='thelpi'
'thelpi' with letters rearranged gives 'philte'.
'philte' going around 'a' is 'philate'.
'philate'+'list'='PHILATELIST'
(Other definitions for philatelist that I've seen before include "Stamp collector" , "Person with hobby" .)