Speaking or singing, the voice of Joshua Davis is a disarming instrument: weathered and warm, as capable of conjuring confessional intimacy on a global stage as it is of making a small room, well off the beaten path, resonate with startling urgency and power. Couple it with an earnest poetic sensibility, a boundless work ethic, and an uncanny gift for connecting with audiences spanning generations, and it’s no wonder that Davis is now poised at the brink of the sort of widespread recognition that typically passes right over such a humble troubadour.