The project is called Knock-knock, Change is at Your Door, and the funding largely comes from a surprising source – the royalties from ABBA’s hit ‘Chiquitita’, which means “little girl ...

On record and stage, Abba exemplified all that was fun and exhilarating in pop music. And leading the chorus in a string of worldwide hits was the distinctive, mellow voice of Frida Lyngstad ...