sentences:  Shortly after this, Ivan Hattingh called the writers and asked them to write an extended musical, similar to "The Kestrel Song", but about the Amazon Rainforest.Although it seemed an impossible task, they accepted and penned the first half of "Yanomamo" (1983), which described the beauties of the Amazon rainforest.By the second half, which contrasts the lighter first, the writers explore the human problems that existed in the Amazon basin at the time, and ask strong questions about western attitudes to tribal societies and our role in protecting such important and sensitive natural balances.