Sigh as father gets round this family piano (7)
I believe the answer is:
suspire
'sigh' is the definition.
(I know that sigh can be written as suspire)
'father gets round this family piano' is the wordplay.
'father' becomes 'sire' (synonyms).
'gets round' means one lot of letters goes inside another.
'this family piano' becomes 'usp' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'sire' placed around 'usp' is 'SUSPIRE'.
'as' acts as a link.
Can you help me to learn more?
(Other definitions for suspire that I've seen before include "sigh" , "The poetic yearn" .)