The Melbourne Symphony is launching a new series of pops concerts to go along with its classical offerings, prompting consternation from some corners of the business in which such shows are thought to represent a dumbing down of the product. But to judge from what’s being placed on the pops shows, these will be a far cry from the pops shows played by many American orchestras, in which 100 classically trained musicians become a droning backup band for an aging pop star. The Melbourne series will be more in the model of Arthur Fiedler’s old Boston Pops concerts, featuring light classics and jazz-influenced works.