Kurt Wagner's voice is less a sound than a sensation - a deep receding throbbing, like wine in the blood or a hangover in the head. We felt it first at the back of the cinema, as the Lambchop frontman strolled through the darkened venue performing an a cappella, almost conversational rendition of the X-Press 2 collaboration Give It.

An alt-country legend whose writing has become increasingly soulful and personal, Wagner is currently testing "new and obscure" material on a rare solo tour. His trademark baseball cap, v-neck and glasses picked out by a tiny glow worm of light, he increased the feel of a Nashville porch by playing vintage guitar and plucking down song sheets pegged to a makeshift washing line.

The predominant tempo was very much that of a tortoise who's more than happy to stand aside and let the hare seize victory. I know because I've tried to munch in time: in retrospect, the large salted popcorn wasn't the best idea.