Those falsettos, those white suits, those toothy smiles: You think you know the Bee Gees. But their story goes back much further than the ’70s, and it’s full of twists. From their roots as an eclectic harmony band in Australia and their first wave of Beatlesque fame, through their domination of the disco revolution and their years as an punchline, the Bee Gees stayed alive because of the Gibb brothers’ harmonies and especially their impeccable songs. This month, Hit Parade traces the influence of the brothers Gibb on virtually every popular genre, from pop to R&B, rock to easy-listening, country to…yes, even hip-hop. Email: hitparade@slate.com  Learn more about your ad choices. Visit megaphone.fm/adchoices