Iggy Azalea, Lorde, Meghan Trainor and Taylor Swift complement each other perfectly in DJ Earworm’s giddy, just-released “United State of Pop 2014” mash-up. As usual, the California producer’s annual pop mega mix combines 25 of the biggest hits of the past calendar year, including the above singers’ “Fancy,” “Team,” “All About That Bass” and, of course, “Shake It Off,” respectively.
