Dionne Warwick: moments of beauty from a pop legend

• For nearly three decades, Cheltenham Jazz Festival has been cheerfully repudiating the claim that jazz is “niche”. Sure, this music might have had its big moment in the middle of the 20th century, but it’s still everywhere today, living on in a dozen other genres. Each year, the festival – which kicked off on Wednesday and runs until Monday – manages to serve up something for everyone, not just the turtle-necked brahmins. Over the coming days, there’ll be performances from the piano virtuoso Bra