Touching gift set up musical agent (14)
I believe the answer is:
representative
'agent' is the definition.
(thesaurus)
'touching gift set up musical' is the wordplay.
'touching' becomes 're' (I've seen this in other clues).
'gift' becomes 'present' (present is a kind of gift).
'set up' says the letters should be written in reverse.
'musical' becomes 'evita' (I've seen this before).
'evita' in reverse letter order is 'ative'.
're'+'present'+'ative'='REPRESENTATIVE'
(Other definitions for representative that I've seen before include "MP" , "US politician" , "Commercial traveller" , "member of parliament, perhaps" , "salesman?" .)