beat cadence swing lilt tempo pace pulse accent cadency time bounce flow meter metre periodicity progression sequence stress throb measure movement pattern regularity music beat pulsation rhyme stroke tick palpitation vibration drum pound speed oscillation rate emphasis ictus momentum sway motion frequency thump thump throbbing pulse surge undulation thud modification syncopation harmony groove upswing rhythmus verse mora structure division melody foot tune pound pulsate pump wave vibrate reverberation reverberating palpitate hammering signal swell pressure flutter ripple quake quiver drumbeat shock current rush patter accentuation impulse flash clip lick velocity force alacrity celerity fastness swiftness prominence tap staccato thud quickness heartbeat