In 1962, at the age of twenty-six, Trisha Brown became one of the original members of the experimental Judson Church Dance Theater in New York, and in 1970 she cofounded The Grand Union. The dancers of these radical groups, such as Yvonne Rainer and Steve Paxton, embraced improvisation and the use of everyday movements not usually associated with legitimate choreography. To bring her dance into the real world of objects and unpredictable events, Brown...