Famous ABBA Fans Talk: CherAs Ruby Sheridan, the mother of Donna [Meryl Streep], Cher was the unexpected, secret weapon of Mamma Mia! Here We Go Again. One thing led to another and, in the wake of the 2018 hit film, the Oscar, Emmy and Grammy award-winning legend announced she would release a complete album of songs from ABBA’s catalogue. The result, Dancing Queen, was a critical and commercial success, giving Cher her first number one on the US Top Album Sales chart and hitting the top ten in a further 18 countries. To promote the album, Cher embarked on the aptly-named Here We Go Again tour.