Fruit soft and chubby (5)
I believe the answer is:
plump
'chubby' is the definition.
(I know that chubby can be written as plump)
'fruit soft' is the wordplay.
'fruit' becomes 'plum' (plum is a kind of fruit).
'soft' becomes 'p' (musical abbreviation for 'piano', soft).
'plum'+'p'='PLUMP'
'and' acts as a link.
(Other definitions for plump that I've seen before include "Slightly fat" , "Rotund" , "Pleasantly chubby" , "Corpulent" , "Chubby, fat" .)