Ability to compose a tune in plane (8)
I believe the answer is:
aircraft
'plane' is the definition.
(I've seen this before)
'ability to compose a tune' is the wordplay.
'ability' becomes 'craft' (craft is a kind of ability).
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'compose a tune' becomes 'air' (I am not sure about this - if you are sure you should believe this answer much more).
'craft' after 'air' is 'AIRCRAFT'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for aircraft that I've seen before include "Eg, seven four seven or Airbus" , "Aeroplane, helicopter etc" , "Flying machines" , "means of transport" , "Eg, plane, helicopter, etc" .)