Photo by S.A.M./Alamy Live News At London’s O2 arena, the Olivia Dean T-shirts (a soft-focus vignette of her face, the cover of her last album) are often paired, by the majority female crowd, with a white boho maxi skirt. This audience, at least on the night I attended – one of an astonishing six sold-out nights – is very wholesome. There is no other word for it. The 27-year-old Dean’s second album, The Art of Loving , is Tapestry (1971) by Carole King for anyone too young to remember Carole King: a beloved record of the kind that would, if we still bought much vinyl, be carried to college possessively under the arm. It won Album of the Year at the Brit Awards this year. Dean wrote her collection of songs “to try and define love and what it means”. She was inspired by the theorist bell hooks, whose famous 1999 work, All About Love , is lurking there in the record’s name.…