Question

why 8 beat in music...

Answer 1

The key to hearing the beat is listening for the “8 count,” also known as a “set of 8” or a “dancer's 8.” The secret to hearing the beat of music. An 8-count is a rhythmic grouping of 8 beats. It's like a “sentence” of music. You can hear sets of 8 in almost all music (waltz is in sets of 6).