Answer: droning

AnswerCrossword Clue
DRONINGSwarm sound
DRONINGBagpipe music
DRONINGGoing on and on
DRONINGGoing on and on and...
DRONINGGoing on and on and ...
droningto speak in a dull, monotonous tone
droningDRONE, to make a monotonous humming sound
droningto make a deep humming sound
droningdeep humming sound