GREAT question! It so often gets asked the other way. (It's a good question that way too, just overdone.) Disturbed's cover of "The Sound of Silence" got a lot of attention 7 or 8 years ago. Like a lot of people, I was blown away. It was powerful and raw. People said it had replaced the original. But for me it ended up being a one-play wonder. Once I'd heard it, I didn't need to hear it again. The unexpectedness was the hook. Once that was gone, the cover was much less interesting. I kept being drawn back to the Simon and Garfunkel original. It was quiet and gentle and yet somehow so powerful that it pushed the newer version aside and re-asserted itself as the ur-text.