August 17, 1936
Lake Traverse Reservation, South Dakota, United States
December 13, 2007
Los Angeles, California, United States
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Westerman has written music in collaboration with Jackson Brown, Willie Nelson, Joni Mitchell, and Kris Kristofferson and has toured the world with Sting and Raoni, Chief of the Kayapo Indian Nation on the Xingu River in the Amazon, for the Rain Forest Foundation.