ABBA at No. 1: When “Mamma Mia” Took Over the UK Charts Dear Friends and Family, In a moment of pure pop-history poetry, Mamma Mia by ABBA reached UK No. 1 on January 31, 1976, replacing Bohemian Rhapsody—a song that famously pleads “Mama, let me go” in its lyrics. Rock’s grand operatic farewell gave way to pop’s sparkling arrival, linked by a single phrase. Few chart handovers have ever felt so symbolic: pop taking the crown from rock through a shared lyric echoed across genres. By the time “Ma