advance tickets and VIP packages in ABGB shop Members of The Watters, Band of Heathens, Shinyribs and more pay tribute to the legacy of Joe Cocker and Leon Russell's epic all-star 70s roadshow.  Proceeds benefit Simsfoundation.org, providing mental health and treatment services for Austin music community since 1994. [caption id="attachment_36221" align="alignnone" width="467"] Singer Joe Cocker (right) and musician Leon Russell perform during the 'Mad Dogs and Englishmen' tour at Mammoth Gardens on April 28, 1970 in Denver, Colorado.[/caption]