He finally has all the pieces in place; he should be able to make the music as loud as he wants but it's not working -- the sound of his symphony is not coming out. Something's wrong, a chord is loose. It's not Beethoven's 9th, it's the drops of the leaking faucet.
When society puts a Glock machine pistol into the hands of a man with a haywire brain, society is as crazy as the patient. Either we find a way to prevent that, or we find a way to get rid of guns altogether.