Giorgio Moroder

Moroder’s emergence from a two-decade hiatus to appear on a 2013 Daft Punk album wasn’t just a cameo. It sparked a second act for the now 77-year-old Italian composer, often credited with inventing electronic dance music (and, yes, “Danger Zone” from the Top Gunsoundtrack). His 2015 album, Déjà Vu, is full of catchy, danceable collaborations with the likes of Sia, Kylie Minogue, and Britney Spears.