Jeff St. John (1946–2018) was an Australian rock and soul singer renowned for his powerful voice and dynamic stage presence. Emerging in the 1960s, he fronted influential bands including Jeff St. John and the Id, Copperwine, and Yama, earning acclaim for his electrifying performances and vocal range. Despite living with spina bifida, St. John became a symbol of resilience and creativity, leaving a lasting mark on Australian music. His contributions helped shape the nation’s emerging rock scene and inspired generations of artists through both his talent and determination.