It has been more than 40 years since their last single, but ABBA are back in the charts with two new songs -- I Still Have Faith in You and Don't Shut Me Down. ABBA's diehard fans certainly still have faith in them, though as ABBA fan expert Shanika Ranasinghe wrote in a recent piece in The Conversation, some of those fans would have died waiting for the Swedish pop group to put out new material. Shanika is a post grad student at Royal Holloway, University of London and a card-carrying member of the ABBA fanclub. Her ongoing PhD research looks at ABBA fandom in the 21st-century, specifically ABBA's long-term fans.