Queen record, i.e. retro remix, for collection (10)
I believe the answer is:
repertoire
'collection' is the definition.
(repertoire is a kind of collection)
'queen record i e retro remix' is the wordplay.
'queen' becomes 'r' (r is abbreviation regina. e.g. in ER ).
'record' becomes 'ep'.
'remix' is an anagram indicator (I've seen this in other clues).
'i'+'e'+'retro'='ieretro'
'ieretro' with letters rearranged gives 'ertoire'.
'r'+'ep'+'ertoire'='REPERTOIRE'
'for' acts as a link.
(Other definitions for repertoire that I've seen before include "Range of works performed" , "Range of skills or songs" , "This is all actor can portray" , "Complete range of a performer's prepared material" , "Pieces a performer knows and plays" .)