Blond Ambition tour, April-August 1990
Touring her fourth album, Like a Prayer, Madonna altered the blueprint for modern pop shows with this combination of narrative, choreography, high production values and fashion. That it was also a taboo-busting exploration of sexuality and religion only solidified its legacy: she nearly got arrested in Toronto for simulating masturbation, while Pope John Paul II called it “one of the most satanic shows in the history of humanity”. Alim Kheraj

Full list at The Guardian