Satisfied with piano on hire (7)
I believe the answer is:
pleased
'satisfied' is the definition.
(pleasing is a kind of satisfying)
'piano on hire' is the wordplay.
'piano' becomes 'pd' (I can't justify this - if you can you should give a lot more credence to this answer).
'on' is an insertion indicator (as in clothing 'on' a person).
'hire' becomes 'lease' (synonyms).
'pd' enclosing 'lease' is 'PLEASED'.
'with' acts as a link.
Can you help me to learn more?
(Other definitions for pleased that I've seen before include "Well satisfied" , "Happy, satisfied" , "Glad" , "like Punch?" , "Gratified" .)