The music of ABBA is not that happy. It might sound happy, in some strange way, but deep within, it's not happy music. It has that Nordic melancholic feeling to it. What fools you is the girls' voices. You know, I do think that is one of the secrets about ABBA. Even when we were really quite sad, we always sounded jubilant.
Bjorn Ulvaeus
Music, Happy, Deep 