Soul-stirring volume returned by learner on Scottish island (9)
I believe the answer is:
emotional
'soul-stirring' is the definition.
'volume returned by learner on scottish island' is the wordplay.
'volume' becomes 'tome' (I've seen this before).
'returned' shows that the letters should be reversed in order.
'by' means one lot of letters go next to another.
'learner on' becomes 'l' (I am not sure about this - if you are sure you should believe this answer much more).
'scottish island' becomes 'iona' (I've seen this before).
'tome' reversed gives 'emot'.
'l' put after 'iona' is 'ional'.
'emot'+'ional'='EMOTIONAL'
(Other definitions for emotional that I've seen before include "Showing feelings like love or fear" , "Subject to intense feelings" , "Deeply feeling" , "Thrilling" , "Poignant" .)