Don't talk rubbish.
90 Kilowatts of audio (RMS) would, if the speakers etc were 100% efficient, require 360 amps from a 240 volt domestic supply.
Allow for typical efficiencies of audio output stages, and thermionic valves are the worst having a very high impedance, you are looking at taking close to 1,000 amps from the mains supply, and a large percentage of this needs, by definition, to be routed to loudspeaker systems maybe between 2 to 8 ohms impedance, so do the maths children.

Seeing as a domestic main company fuse is 60 amps with commercial buildings usually restricted to 200 amp fuses, anyone with more than a brain cell and an education can tell you... forget 120kw of 'sound'.
In 1972 a Pink Floyd OPEN AIR concert in Venice or similar was halted as the closest buildings were suffering from structural damage from the noise.
The amplifiers at the do were "reportedly" 20kW.

If it isn't RMS (look it up!) it isn't true power.

With catalogues claiming 200 watt amplifiers for laptop PC's and all they need is 4, AAA batteries, do you expect to get 40 AMPS from an AAA cell for more than 50 milli seconds?

get real. get educated.