From the site:
"I was nervous sitting behind those drums," Grimes remembers. "The microphones and stuff-it was all new to me. They even put me on a smaller wood stool, so my feet could reach the pedals. And this rhythm they were trying to come up with-we couldn't find it at first. So the upright bass player, Wilbur Steinberg, said to me, 'Play that rhythm you play at the club on [early New Orleans R&B hit] "Ooh Poo Pah Doo."' Rufus went into the song again, and I played that rhythm. Chips looked at me and said, 'That's it.'"
Howard has nice things to say about Chips in this link also:
"I went up there and met Ms. Axton and Mr. Stewart. Chips Moman was the engineer. He was the most kindhearted man I'd ever met. He believed in me for some reason. It was Bob Talley's band: Alfred Rudd, Wilbur Steinburg, Talley — he was a piano player but played trumpet on that session — Booker T. Jones, long before he became the MGs ... Me and Booker were the youngest ones up there. The record was called 'Cause I Love You.' [Released in 1960 between Charles Heinz' only two singles.]