"speaking with, uh, about the vocal choreography, one of the first groups that I worked with was a group called the Cadillacs, which was uh, an exceptionally talented group. They all moved well and they sort of established Cholly Atkins's style. In other words they basically put me on the map, and everybody would look at them and see their choreography and they wanted to know who did it, so they would tell them."
Source : Stanislav Grof, Hal Zina Bennett (1992). “The holotropic mind: the three levels of human consciousness and how they shape our lives”, Harpercollins