Sing falsetto, skip the chorus: How ageing rock stars keep their voices in shape

• Following an appearance at a house-full Gainbridge Fieldhouse, Indianapolis, on April 19 2022, Jon Bon Jovi did something he rarely does – he read the subsequent review in the city’s leading newspaper. Long aware that his band, Bon Jovi, are the kind of outfit beloved of millions of people rather than a smaller constituency of broadsheet music critics, nonetheless, the headline knocked him sideways. It read, “What’s going on with Jon Bon Jovi’s voice?”