Little dog quiet and evidently superior (3)
I believe the answer is:
pup
'little dog' is the definition.
(short for puppy)
'quiet and evidently superior' is the wordplay.
'quiet' becomes 'p' (music symbol for 'piano', ie soft or quiet).
'and' is a charade indicator (letters next to each other).
'evidently superior' becomes 'up' (I can't justify this - if you can you should give a lot more credence to this answer).
'p'+'up'='PUP'
Can you help me to learn more?
(Other definitions for pup that I've seen before include "Produce litter" , "Small palindromic dog" , "Young seal" , "Young of various animals" , "Youngster" .)