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 can't explain this - if you can you should believe this answer much more).
'free' becomes 'rid' (to be free of something is to be rid of it).
'and' means one lot of letters go next to another.
'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" .)