Few assumptions are reliable, but it's fair to assume everyone’s heard of ABBA. The Swedish group quickly rose to fame, becoming one of the most successful acts of the 1970s with their shimmering disco-esque sound and irresistible melodies. Their signature bell-bottomed style helped to secure their place as cultural icons, with the steady return of sequins sure to give them credit along the way. Despite their split in 1982, ABBA continues to embrace new projects and new technologies, ensuring that they continue to connect with younger generations. Their legacy is not exclusively one of nostalgia, but one that is very much alive.