Circadian rhythms are cycles in the body that occur roughly across 24 hours. In humans, circadian rhythms cause physical and mental changes in the body, including feelings of wakefulness and sleep.

Rhythm is a central component of music. Rhythm refers to the absolute timing of individual notes or sounds. The ability to perceive and produce rhythm enables people to make music. Research has shown ...

“Rhythm is sound in motion. It is related to the pulse, the heartbeat, the way we breathe. It rises and falls. It takes us into ourselves; it takes us out of ourselves.” —Edward Hirsh Rhythm. It is ...