There are some acts you’d rather not catch in a concert hall. The relatively recent pairing of King Creosote and Jon Hopkins isn’t, however, one of them. Diamond Mine, their seven-year project, is a deceptively serious piece of art that prefers to be listened to closely and without distraction. It may have been one of the more obscure nominees at this year’s Mercury Prize, but that recognition has resulted in an album that could easily have slipped quietly by, gaining fans fast. And last night those fans found themselves immersed in Diamond Mine’s meditative soundscapes whilst, on stage, one eccentric and one prodigy gave a masterful demonstration of the benefits of perseverance.