If you're an aspiring rock musician, being able to cover Randy Rhoads' parts in Ozzy Osbourne's "Crazy Train" is a sure test to see how good you are. Rhoads is regarded as one of the greatest guitar players of all-time despite his career being cut tragically short.
Needless to say, covering his guitar parts is a feat in and of itself, but YouTube piano player Gamazda does that, and even manages to play the bass part and vocal melody of "Crazy Train" flawlessly on the keys.
It's not only that the cover sounds like the song note-for-note, Gamazda even incorporates Rhoads' pinch harmonics to the piano that gives it that extra attention to detail.
Bravo, Gamazda. Bravo.