Clothing for a quiet father, about 50 (7)
I believe the answer is:
apparel
'clothing' is the definition.
(I know that clothing can be written as apparel)
'quiet father about 50' is the wordplay.
'quiet' becomes 'p' (music symbol for 'piano', ie soft or quiet).
'father' becomes 'pa' (pa can mean dad or father).
'about' says the letters should be written in reverse.
'50' becomes 'arel' (I can't justify this - if you can you should give a lot more credence to this answer).
'p'+'pa'='ppa'
'ppa' written backwards gives 'app'.
'app'+'arel'='APPAREL'
'for a' is the link.
Can you help me to learn more?
(Other definitions for apparel that I've seen before include "Garb, clothes" , "Clothes - garments" , "Raiment" , "Clothing, things to wear" , "Real pap (anag) - clothing" .)