Silent Symphony

The Symphony is performing “Concerto For Dogs” tonight.
It is entirely out of the human audio spectrum.
Violins, trombones, and other instruments tuned like dog whistles.
Nobody knows what the composer’s name is.
He was born as Almo Burt, but he had it changed a few years back to something outside of the audio spectrum, too.
Typical weirdo artist, right?
He steps through the curtain, bows, and announces: “Now put on your blindfolds. The performance is about to begin.”
The audience agrees, the lights are turned off, and the Symphony sneaks out for a drink at the pub next door.