Despite the playability questions of his builds....you HAVE to admit the guy is DRIVEN and certainly leans more toward original ideas than copying others.
He's like a mad scientist luthier.
This acoustic thing looks more like a bass for a mariachi band. He says it sounds like an upright....but with all the re-cycled old piano wood in it, I'm surprised it doesn't sound more like a piano.
Like a friend of mine, who is a really good luthier, said...as he handed me a stripped down Wishnevsky Wish Bass from his pile of junk parts....."it must be called a "Wish" bass because after you play it, you wish you never bought it."