Hoppipolla-Sigur Ros

Fall in love to the song 'Hoppipolla' by Sigur Ros recently,
this is the song by the Iceland band that recommended by Prof Roslan,
i don't know the exact meaning of the song,
but just feel 'relief ' whenever listen to it,
somebody told me that listen to an unknown language song can help in brain stimulation,
i am not sure is there any evidence for this,
but i rather believe it,
perhaps it's a good try...