In explaining the decision to add Nelly to the recent Florida Georgia Line country hit "Cruise," Republic Nashville's Jimmy Harnen cited a "format-less" world. And we do have more proof that listeners are sincere about truly liking "a little bit of everything." So why does top 40, the format built on a little bit of everything, not play Florida Georgia Line until there's a Nelly remix? And "mood service," the initial impetus behind format fragmentation, has hardly gone away.