I'm pretty sure if you used Yoko's voice as a burglar alarm, you'd be sued by the thieves for cruel and unusual punishment.
There are extremely talented avant-garde artists like Laurie Anderson, who are smarter than the art. That's what makes it entertaining. She told this great story about the evolution of male spiders. After mating, the female kills the male. Eventually one smart male brought a "present". After mating, she went to see what he brought, he escaped. When I met her on the street I had to ask her about it, I found it fascinating. Because in my feeble mind, A) spiders can't communicate B) If the male is killed, the babies don't know it. C) If the male escapes, he still can't tell the off-spring. She smiled at my stupidity and said "Instinct".
Then there are people like Yoko who have absolutely no talent, and fool very few. She had John fooled. She must have been a great lay.
Karen and I in the 80s used to get drunk and go to "modern dance" performances. We'd just smile and giggle while everyone else was enthralled by people rolling around the stage haphazardly. Modern dance is worse than bad dramatic theatre. Then there was the AWFUL avant-garde COPERNIOUS. I wish I could find video of this psycho. He used to get booked regularly, and be booed 95% of the time.
It's hard to be worthy of the term avant-garde.