Followup to: If we dug a hole to China, would the Earth make a
   whistle as it spins? I especially loved the imagery of the
   ribbed tube; I hadn't thought of how the tube makes the sound
   before. Also, I think the speed changes and even the Doppler
   effect alone would cause even a small sound to become noticeable
   as it lowers or gets higher in perceived pitch.
   In the case of the Earth, is the air pressure consistent as the
   Earth spins and rotates around the sun?

   We have mountains and valleys, oceans and various currents all
   around the planet. They produce their own variances and vortexes
   and pressure increases and drops. Would they consistently be the
   same on both sides of the hole?

   Also, does the air rotate around the earth at the same speed as
   the planet itself?

   Also satellites; you have the GPS ones that are geosynchonous -
   presumably they would be stable and might produce consistent
   overtones or harmonics.. (how thick is what's left of the
   atmosphere up there if any? Any drag? . but what of all of the
   other satellites?

   Plus the activities of people - as in the butterfly in Africa,
   could a fart in Florida make the Earth sing?