Frequently coming from the rooftops (3)
I believe the answer is:
oft
'frequently' is the definition.
(I've seen this before)
'coming from the rooftops' is the wordplay.
'coming from' indicates the answer is hidden within the clue.
'OFT' can be found hidden inside 'rooftops'.
(Other definitions for oft that I've seen before include "time and again in literature" , "Many times, of old" , "Many times, to the poet" , "Old song'... in the stilly night'" , "Many times (archaic)" .)