ABBA is one of the most beloved and popular bands in the history of the music industry. Completely unique and original in their sound, image, and outlook, the Swedish pop quartet first burst onto the global music scene with their Eurovision-winning iconic track “Waterloo” in 1974, and went on to become one of the biggest-selling pop groups of all time. But behind the fame and fortune and chart-topping tracks, were secret struggles and rumored dark feuds, that eventually spelled the end of the pop legends’ reign over the industry.Let’s take a look at the true story behind the rise—and fall—of this iconic pop outlet.