YouTuber maromaro137 is employing the stylophone, a miniature analog stylus-operated keyboard invented in 1967, for very rock and metal purposes. The YouTuber recently covered "Master of Puppets" by Metallica and has now returned with covers of Rammstein, Linkin Park, System of a Down, and even the solo from "Crazy Train" by Ozzy Osbourne.
Check 'em out below!