Ok, I had this thought about gravity. My theory is sound is gravity... but sound is just the mechanism that causes things to spin / rotate / revolve in circular movements... which causes gravity as it pushes you down as the force gives weight to objects with a lot of mass.
This mass is also warping the Higgs Field which creates a sucking effect and hold us on the planet. Because the spinning should throw us off the planet if you think about it. Maybe that is why when humans are out in space you have to spin on the inside of the object. Because the object is not big enough to warp the Higgs Field and suck you back. So you have to let inertia give you the gravity from the inside out.
Maybe somebody already theorized about this stuff... I haven't done any research... these ideas are just popping in my head and I believe they add some specifics to what I said in my essay.