ABBA’s iconic 'Dancing Queen' is turning 50, marking five decades since the Swedish group released one of the most recognizable pop songs of all time. The disco-pop classic was released in Sweden on August 16, 1976, as the lead single from ABBA’s fourth studio album, 'Arrival,' and quickly became a worldwide No. 1 hit. It went on to become ABBA’s first and only U.S. No. 1, cementing its place as the group’s signature song and an enduring dance-floor favorite. #abba #music #dancingqueen #viral