There's nothing more priceless than this reaction!
You might have seen some of their viral videos before. If you haven't, Ted and Fred Williams are two YouTube twins that managed to set Phil Collins "In The Air Tonight" back on the charts. Now, they moved onto Whitney Houston's 1991 Super Bowl performance of the Star Spangled Banner. They were so amazed by her vocals, they actually stopped mid-performance.
One of the twins described her performance as "switchin gears like a car, she has a manual voice."