The two had originally met in 1957 when Brecht heard that Cage was planning to hunt mushrooms in the New Jersey area; he rang him up and invited him to 'stop by and say hello'. Cage accepted, and returned the invitation; it was whilst Brecht, Kaprow and their families were visiting his house in Stony Point on the Hudson, that Cage invited them to attend his classes in New York. Ironically, musicians found the course far harder than the visual artists who had enrolled;