Related Clues:
- Group that inspired 'Mamma Mia!'
- Scheme in which three of four lines rhyme
- Benny Andersson was in it
- Basic quatrain scheme
- Palindromic band name
- 'I Have a Dream' group
- Certain quatrain pattern
- "The Winner Takes It All" quartet
- Swedish rock foursome
- '70s quartet consisting of two married couples
- Inspiration for Broadway's 'Mamma Mia!'
- Inspiration for Broadway's "Mamma Mia!"
- Agnetha, Benny and two others
- "Take a Chance on Me" quartet
- Group featured in 'Mamma Mia!'