The Harpejji is a hybrid musical instrument that was invented by a math professor by the name of Jorn Starret. The musical instrument, which has 24 strings on 24 frets, is the offspring of a union between the guitar and the piano.
I'm looking at this strange-looking new guitar/piano fusion and I'm thinking that it must be hard to master, but I'd be willing to give it a shot if I had $6,000 to spare.
Implications - The Harpejji, invented by math professor Jorn Starret under a different name, is now being produced commercially. The Harpejji, which comes in a variety of finishes goes for $5,995. To play this bizarre instrument you to need tap 24 strings on the 24 frets.