Tradesman, quietly, to move awkwardly (7)
I believe the answer is:
plumber
'tradesman' is the definition.
(I've seen this before)
'quietly to move awkwardly' is the wordplay.
'quietly' becomes 'p' (p for piano and quiet).
'to move awkwardly' becomes 'lumber' (I've seen this before).
'p'+'lumber'='PLUMBER'
(Other definitions for plumber that I've seen before include "tradesperson" , "One fits water and gas pipes" , "He fixes water-pipes etc in building" , "Repairer of pipes" , "He repairs water pipes, installs washing machines etc" .)