As legendary rock band Cold Chisel prepare for their 50th-anniversary tour, Australian Story looks back over the band's colourful history and examines why they have become such an essential part of Australian culture. All four surviving members – Jimmy Barnes, Ian Moss, Don Walker and Phil Small – recount how the band rose from industry outsiders playing rough suburban pubs to arena-filling rock royalty. The episode looks beyond the band's history to explore the enduring impact and appeal of their songs. "The songs start as hits and then they become anthems," says journalist, writer and fan Trent Dalton. "And then, with time, they become sacred."