Abba's return will be either genius or disaster – but nothing in between | Alexis Petridis

The Swedish four-piece, returning with new material after 35 years, have seen critics finally acclaim their pop brilliance – but they still aren’t immune from writing turkeys‘I Still Have Faith In You’ – What do you think Abba’s new song will be like?We live in an era where almost every legendary band that can re-form has re-formed, and where technology means not even death is a barrier to 2Pac or Roy Orbison taking the stage once more. The artists who refuse