When you have Cher’s empowering tour de force “Believe” and Enrique Iglesias’ inspiring ballad “Hero” on your resume, no one can deny your impact on pop music. As a cowriter of those era-defining hits, British songwriter Paul Barry helped propel both stars to the top of the charts. He’s kept up a consistent streak since, crafting more sweeping, sentimental songs for vocal powerhouses including James Bay, Céline Dion and Lionel Richie.