Quietly clear out bundle (6)
I believe the answer is:
parcel
'bundle' is the definition.
(I've seen this before)
'quietly clear out' is the wordplay.
'quietly' becomes 'p' (p for piano and quiet**).
'out' indicates an anagram (out can mean wrong or inaccurate).
'clear' with letters rearranged gives 'arcel'.
'p'+'arcel'='PARCEL'
(Other definitions for parcel that I've seen before include "One wrapped" , "plot" , "Wrapped missive" , "Paper-wrapped package" , "Wrapped present" .)