Choreographer Twyla Tharp develops dance routines through extensive iteration including mental rehearsal, physical trial, and imagining before public performance.

“I've been um really intrigued by the uh famous choreographer Twilight Tharp. She's now in her 80s. She's incredible. said and written incredible things about choreography. And um she said that she has this practice where she'll um sort of develop a dance routine, then go through it in her head, then because she was a dancer, she can try it, and then she has people do it, and then imagine it, and then they iterate thousands and thousands and thousands of times before they actually even perform it once in front of a small audience and and not publicly.”