A few years ago, Korean guitarist Zack Kim was showing off his great skills on the guitar, by playing two of them at the same time to recreate what you hear when you play the first world in Super Mario Bros.:
People thought he was either a music genius, or a fake, with some people commenting that it was virtually impossible to do what he does. Obviously, they aren’t aware of keyboardist Ray Manzarek doing something similar 44 years ago:
Kim continues to make music today, modifying his song to something quite nice. Here is his version of Jimi Hendrix Experience‘s “Bold As Love”.
This Is Book's Music 