Most animals do not recognize this and continue about their business, humans cannot help but to notice. We see the rhythms that are apparent in the world and for some reason we emulate them. All of the tangible world is in motion, a motion that has a structure, and as a higher species we can detect this. Tribes pound away at their drums and you cannot help but feel a need to move, to think a certain way. The Universe seems to have an affinity for mathematics, the truth of 2 plus 2 is always 4.
Philosophy dictates that the basis of truth is in math.
Music, beat, rhythm and dance are all founded in that same idea. Music is like color, or weather or physics. We can all produce it, experience it and understand it at an emotional level and a physical level and never realize the dynamics of the mathematical monuments that are being played out for us. There are laws and constructs in music that must be followed. Scales and chords and harmonies follow strict guidelines that people had been following themselves for centuries but never knew it.