Article continues below advertisementOK! can reveal Taylor Swift is feared to be plotting a diss track against Jack White after he sparked controversy with remarks about her songwriting - with insiders suggesting the rocker has made himself a "sitting duck" for one of the pop phenomenon's trademark lyrical takedowns.Swift, 36, whose music has long drawn on personal relationships, became the focus of renewed industry debate after White, 50, commented on what he described as a trend of artists turning public breakups into chart-topping material.