Maisie Peters knows that pretentious singer-songwriter cliche just as well as you do. “I love Joni Mitchell, and I listen to her in the bath – with the lights off!” she laughs, creating a caricature of the woman so many assume this gifted artist might be in real life. But there’s something different about this girl: one who, at the age of 18, has already spent years beguiling millions of followers with her breezy, folkish guitar pop. A Joni Mitchell fan she might be, but beneath it all there’s a regular teenager who’s more interested in modern chart superstars than the esoteric legends of her field. She is, quite simply, not all that bothered about seeming cool.