So, compressed air power is a Thing. Compressed air tools are reasonably common, and compressed air has even been delivered commercially as an industrial utility at times.
But all existing compressed-air technology is, to draw an analogy with electricity, "direct current"--you have a constant pressure (voltage) at the inlet which drains to a lower pressure (voltage) outlet. With electricity, however, there are quite a few benefits to also using alternating current supplies. In a compressed air system, this would correspond to periodically cycling the inlet pressure up and down, rather than holding it constant--and transmitting "AC" compressed air power would be equivalent to transmitting sound waves down a tube.
So, is this feasible? Would it make any sense to have "sonic power plants" transmitting high-powered sound through closed pipes in a compressed-air analogy of AC electricity? If yes, how could such a power distribution system be made efficient? And if not, why not?