Quiet order to a little dog (3)
I believe the answer is:
pom
'a little dog' is the definition.
(I've seen this before)
'quiet order' is the wordplay.
'quiet' becomes 'p' (music symbol for 'piano'**).
'order' becomes 'om' (order of merit).
'p'+'om'='POM'
'to' acts as a link.
(Other definitions for pom that I've seen before include "Brit abroad" , "Pomeranian dog" , "Britisher in Oz" , "Australian term for Englishman" , "Little dog" .)