There’s something about Edinburgh tables. JK Rowling’s scribblings at one in an Edinburgh café gave birth to Harry Potter and world literary domination. Likewise, when accordionist Martin Green, singer-guitarist Kris Drever and fiddler Aidan O’Rourke jammed at a table in Edinburgh in 2004, little did they know that those would be the first steps towards taking the folk world by storm. Twelve years, five critically acclaimed albums and a slew of BBC Radio 2 Best Folk Band awards later, LAU find themselves in demand at festivals, clubs and concert halls the length and breadth of the UK, in North America…