"We're not a pop band." When frontman Matthew Healy utters those words at the outset of the 1975's sleek, dolled-up "Girls" video, we're to take it as a joke. He doth protest too much, we think, knowing full well what sort of luxuriantly glossy neon guitar music his band specializes in. Never mind the bollocks, nor the guitars: These guys are Britain's foremost bubblegum manufacturers, and they are very good at what they do.