A strong story can be pleasant (7)
I believe the answer is:
affable
'be pleasant' is the definition.
(I've seen this before)
'a strong story' is the wordplay.
'strong' becomes 'f' (musical symbol for 'forte', 'strong' in Italian).
'story' becomes 'fable' (fable is a kind of story).
'a'+'f'+'fable'='AFFABLE'
'can' is the link.
(Other definitions for affable that I've seen before include "Warm and friendly" , "Pleasant and friendly in manner" , "Obliging" , "Pleasantly friendly" , "Pleasant to talk to" .)