Cadence (noun)

1. The rhythmic flow or pattern of sound in music, poetry, or speech.
2. The beat or rhythm of marching feet or other sounds.
3. The falling or tapering off of a sound or a series of sounds.

Origin:

From latin cadentia, from cadere "to fall".

Examples:

1. The singer's voice had a smooth and haunting cadence, which captivated the audience.
2. The drumbeat set the cadence for the parade, as the marching band followed its rhythm.
3. The cadence of the words was so hypnotic that it was hard to look away from the speaker.
4. The cadence of the music changed abruptly, signaling the end of the first act.
5. The cadence of the train's wheels on the tracks was a lullaby to the passengers, as they drifted off to sleep.