ABBA

With over 400 million records sold—outpacing the combined sales of #6 Whitney Houston and #7 Beyoncé's 200 million each—ABBA stands as one of the highest-grossing pop acts in history. Their single Dancing Queen hit #1 in 15 countries and remains a defining anthem of the 1970s. The Mamma Mia! musical franchise has grossed over $2 billion worldwide, a figure that outperforms the average film franchise, proving timeless commercial appeal. Additionally, their 2021 digital concert Voyage earned $16 million in its first month, showing they outsell many contemporary pop stars decades after disbanding.