Related Clues:
- "Mamma Mia! Here We Go Again" group
- ___ to conjure with (someone important)
- 'Waterloo' singing group
- Foursome at a 2008 Stockholm film premiere
- Foursome on a 1983 Swedish stamp
- ''Mamma Mia'' quartet
- ''Mamma Mia!'' quartet
- 'Waterloo' foursome
- 'Angeleyes' band, 1979
- Rhyme scheme in Frost's 'Stopping by Woods on a Snowy Evening'
- 'Super Trouper' band
- Pop group whose name derives from the initials of its members' first names
- ___-Zaba (classic taffy bar)
- Their logo has a mirrored letter
- Two degrees from south and north, group of four stars?