Knocked back gin and it to the accompaniment of a musical suite (7)
I believe the answer is:
partita
'a musical suite' is the definition.
(I've seen this in another clue)
'knocked back gin and it to the accompaniment' is the wordplay.
'knocked back' says the letters should be written backwards.
'gin' becomes 'trap' (I've seen this in another clue).
'and' says to put letters next to each other.
'to' is a charade indicator (letters next to each other).
'the accompaniment' becomes 'a' (this could be a standard abbreviation which I don't know about).
'trap' written backwards gives 'part'.
'part'+'it'+'a'='PARTITA'
'of' is the link.
Can you help me to learn more?
(Other definitions for partita that I've seen before include "set of musical compositions" , "Instrumental suite" , "(Musical) suite" , "musical piece" , "noted composition" .)