One to deliver notes and perform with Free and Queen (8,5)
I believe the answer is:
dispatch rider
'one to deliver notes' is the definition.
I can't judge whether this definition defines the answer.
'perform with free and queen' is the wordplay.
'perform with' becomes 'dispatch' (I am not sure about this - if you are sure you should believe this answer much more).
'free' becomes 'rid' (to be free of something is to be rid of it).
'and' says to put letters next to each other.
'queen' becomes 'ER' (short for Elizabeth Regina ie Queen Elizabeth).
'dispatch'+'rid'+'er'='DISPATCH-RIDER'
'and' is the link.
Can you help me to learn more?
(Other definitions for dispatch rider that I've seen before include "One carrying messages by motor-cycle" , "Cyclist bearing messages" , "He performs emergency delivery" , "He has urgent message" , "Mounted messenger" .)