(Jimi) was so into it -- if you listen closely you will see that I stayed on him, ... And when he started 'The Star Spangled Banner,' that impromptu thing, you hear the first four, five, or six notes; I'm in there with him. Then I said, 'Wait a minute, we didn't rehearse this, and it doesn't sound too good with me playing.' I backed away, and he continued and made a classic out of that.

Billy Cox