A packed Black Box awaits the arrival of Lau, the atmosphere imbued with excitement and a sort of jovial expectancy. The band’s growing faithful are very much out in force tonight, as fervent applause greets them and the lights fade. Before long they burst into some stern, accordion laden folk. Approving glances go left and right from the guitarist at his band mates as they work their way through a pulsating opening number. The band have a good rapport with the crowd, sharing carefree quips in-between songs which are met with plenty of ironic claps and hearty giggles – particularly…