Fife sound (6)
I believe the answer is:
tootle
'fife sound' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tootle that I've seen before include "Wander about" , "Proceed casually (in car)" , "Casually play (a horn)" , "Drive along" , "Easily drive" .)