The hardest solo to ever try and recreate is the tapping section at the end of steve vai's last song called rescue me or bury me on sex and religion. There is no way on this earth anyone could play that, with no mistakes, without any lack of cleanly played notes and without any slowing down whatsoever. This makes eddie van halen and every other good guitarist out there look like beginners. This is only my opinion but If you disagree with me then learn it and prove it to me or find another "god" of guitar that can play it (or even the first page!!!.