Giorgio Moroder’s new album Dejà vu features the influential producer working with some of the best vocalists, pop and otherwise, of the past quarter-century. On the title-track, he partners with “Chandelier” singer-songwriter Sia, and the two reflect on the past, musical and personal, to create a truly cathartic experience. The song recalls many previous top-40 hits, from “God Is a DJ” to “Call Me Maybe” to “Get Lucky,” but in a subtle, refreshing way. The strings recall the unbridled, pure emotion of Carly Rae Jepsen’s hit, Sia takes on P!nk’s edge during the verses, and there’s a slight guitar riff tucked away towards the back of the track that is reminiscent of Daft Punk’s commercial breakthrough. “I’m falling for you / I’m feeling a déjà vu,” sings Sia on the hook. The feeling is mutual.