Catherine Ringer arrived in French pop music the way a strange weather system arrives — you couldn't predict it, you couldn't ignore it, and once it had passed through you couldn't quite describe it to someone who wasn't there. Her duo Les Rita Mitsouko, formed with guitarist Fred Chichin after they met in a rock opera in 1979, became one of the genuinely irreducible acts in European pop: a band that sold more than a million copies of a single about cancer and grief and still made people dance. The song was Marcia Baila, a tribute to Ringer's dance teacher Marcia Moretto, who died of cancer in 1983. The lyrics — 'It's cancer that took you under its arm' — sit inside a stomping, gently euphoric dance tune, and the combination shouldn't work. It absolutely does. That productive contradiction became the defining mode of everything she touched: serious subjects wrapped in irresistible form, formal experimentation delivered with complete physical commitment. Her biography is implausible even by art-pop standards. As a teenager in late-1970s Paris she appeared in avant-garde theatre and pornographic films — a past she owned without apology. The Greek composer Iannis Xenakis noticed her voice and cast her as a soloist for his work N'Shima in 1977. By the mid-1980s she was working with Tony Visconti, being filmed at her home studio by Jean-Luc Godard, and wearing Jean Paul Gaultier or plastic bags on stage with equal conviction. She declined to let Emmanuel Macron kiss her on the cheek after singing La Marseillaise — with her own new lyrics — at a 2024 constitutional ceremony. Les Rita Mitsouko's peak run — The No Comprendo (1986), Marc & Robert (1988), Système D (1993) — is one of the stranger and more durable bodies of work in French music. Visconti produced the first two; Sparks contributed a song that became a US dance radio hit; Iggy Pop duetted with Ringer on My Love Is Bad. Influences ran from Edith Piaf and chanson to synth-pop, tango, and post-punk, and the band didn't synthesize these into a smooth commercial product — they held the contradictions in place and dared you to look away. After Chichin died of cancer in 2007, four months after the duo's final album and their first UK shows, Ringer kept working. A solo album in 2011, a pivot to electro-tango with Plaza Francia, a second solo record featuring her son Raoul on guitar, and final concerts in 2026 where she recited poetry. She won best female artist at the Victoires de la Musique in 2012. She was awarded a Grammy equivalent. None of this quite captures the scale of what she was in France — a pop star who was also a serious artist, which is a rarer combination than either pop or art usually admits. What she never acquired was a substantial British or American audience, and that gap is genuinely puzzling. The failure is partly circumstantial — Les Rita Mitsouko performed outside mainland Europe only occasionally — and partly a matter of timing. Their peak work arrived in the late 1980s in a market that didn't have a good category for it. UK audiences got a glimpse at the 100 Club and Latitude in July 2007, four months before it ended. That was too late, and not enough. She is survived by her daughters, Simone and Ginger, and her son Raoul. She was born in Suresnes, west Paris, on 18 October 1957, the daughter of an architect and a Polish artist who survived the concentration camps. That history surfaces in her work — Le Petit Train, from Marc & Robert, sets a catchy dance tune against lyrics about a 'train of death,' directly influenced by her father's deportation. She carried serious weight and made it move. That is the hardest thing to do, and she did it as naturally as breathing.