Olivia Newton-John

Born in Cambridge, England, and raised in Australia, Olivia Newton-John built one of the most recognizable solo careers of the 1970s and 80s, even if her polished pop sound sat firmly on the other side of the fence from the hard rock world. Starting out in the late 60s with a gentle country-pop style, she racked up massive hits with soft, radio-friendly tracks before landing the role that would define her cultural legacy: Sandy in the 1978 film Grease alongside John Travolta. That soundtrack became one of the best-selling movie albums ever, and tracks like Summer Nights and Hopelessly Devoted to You are still inescapable decades later.

Where rock fans might genuinely tip their hats is her 1981 pivot with the Physical album. That record leaned hard into synth-driven new wave territory, and the title track spent ten weeks at number one in the US. It was a calculated reinvention that showed real artistic nerve. She may never have shredded a guitar or fronted a leather-clad band, but Newton-John understood the power of image and transformation in ways that even rock icons respect. Her influence on pop music, film soundtracks, and the aerobics-era 80s aesthetic is genuinely hard to overstate.