I remember seeing ABBA winning the Eurovision Song Contest in April 1974. I was only seven at the time, so wasn’t particularly paying attention. But if you’d told my young Scottish self that, approaching half a century later, I’d be heading off to a casino in Arizona to see an ABBA tribute band, I’d certainly not have believed you. My affection for Sweden’s finest export was a slow-brewing affair. While I was aware of them, my teenage years were more devoted to New Wave and New Romantic bands: Abba seemed… retro. Interest in them was largely limited to debates over whether you fancied the blonde or brunette. [For the record, I was on Team Agnetha] Besides, my parents liked Abba. By the rules of teenagerhood, I could not possibly do so.