In order to keep things calm the producers thought it best to keep Little Richard n band well behaved. They n especially LR had gotten wild in previous unfilmed shows.
Since, Elvis Presley stole this song. Does not mean to send hate to the "Boy Of Tupelo". Come on guys. Stop being a hater. I love Richard and Elvis. and does not mean Elvis needs to be hated by all these black and white kids and adults.
He said once Since that all the white groups were taking credit for singing his music --so he would initially be singing much faster and they were unable to match his range.