“Seventy-five years after Arthur Fielder took over the Boston Pops and turned it into the most famous and influential series of its kind, pops concerts are very different. Increasingly, in Boston and elsewhere, pops means Rockapella, medleys of TV themes, Doc Severinsen, celebrity crooners doing music from last year’s blockbuster movie. It means what Richard Dyer, the Boston Globe’s classical music critic since 1975, calls ‘the hits of 25 or 30 years ago — the favorites of the target audience, when young’.”