1) Rataplan 2) Rhythmic thumping 3) Snare sound 4) Sound 5) Sound in a brass band 6) Synthesizer sound 7) The rhythmic sound of a drum 8) Time keeper Found on https://www.crosswordclues.com/clue/drumbeat
Drum'beat` noun The sound of a beaten drum; drum music. « Whose morning drumbeat , following the sun, and keeping company with the hours, circles the earth with one continuous and unbroken strain of the martial airs of England.» D. Webster. Found on http://www.encyclo.co.uk/webster/D/126