Persuasive speaker can hire trio to play (11)
I believe the answer is:
rhetorician
'persuasive speaker' is the definition.
(I've seen this before)
'can hire trio to play' is the wordplay.
'to play' indicates an anagram.
'can'+'hire'+'trio'='canhiretrio'
'canhiretrio' is an anagram of 'RHETORICIAN'.
(Other definitions for rhetorician that I've seen before include "Impressive or persuasive orator" , "Persuasive speaker" .)