These three islands, part of the Gaelic language-speaking region of Gaeltacht, seem stuck in a time warp as a symbol of the Ireland of yesteryear.

BBC: Ireland��s outlying islands

Despite making her name for singing in the Gaelic language, Fowlis recorded two songs for the film - Touch of Sky and Into the Open Air - in English.

BBC: Brave singer Julie Fowlis: 'I was terrified of singing'

The study found that the further advantage for Gaelic-speaking children may have been due to the formal teaching of the language and its extensive literature.

BBC: Bilingual children 'better at problem-solving skills'