Russolo's inspiration from The Art of Noises next to Stein's Two:

The Art of Noise or The Art of Noises here

... "we want to score and regulate harmonically and rhythmically these most varied noises" (war noises). War was Russolo's original inspiration.

.....

Re- reading Russolo's manifesto, I feel how sad it is that he wanted so much to score the sounds of war -the 2,000 grenades the violence the 'ear scent drink of it all '... at the same time in France, (Russolo wrote this in Rome on March 19 1913 after a 'battle' in the Constanzi Theater in Rome) ... Gertrude Stein was writing

‘Sound is coming out of her. Sound has been coming out of her. Sound can come out of her.

Sound coming out of her is coming out of her and she has not been hearing not been hearing the sound that has been coming out of her. Sound has come out of her and she is listening and sound can come out of her.

Sound comes out of her. Sound coming out of her is expressing that thing, is saying something. Sound coming out of her is expressing something, is saying anything. Sound coming out of her is expressing everything, is saying everything. Sound is coming out of her. Sound has been coming out of her. Some sound comes out of her. Sound comes out of her.

If sound comes out of her it is a sound that expresses that thing expresses sound coming out of her. Sound does come out of her. Sound coming out of her does express this thing does express sound coming out of her.

Sound coming out of her comes out of her and is expressing sound coming out of her. Expressing sound coming out of her is something sound coming out of her is doing. Sound coming out of her is something. Sound is coming out of her. from Two: Gertrude Stein and her Brother

.... and sticking it to Descarte through 'I sound therefore I am'