John Craigie is the kind of songwriter that seeps into your bones. His charming storytelling and understated humor work into his warm and intimate melodies with a winking sincerity that makes his performances a mix of John Prine and Todd Snider. The prolific Portland troubadour unfolds the kind of songs with lines that resurface as epiphanies days later, poetic and profound but strafed with a nonchalant, self-deprecating wit. His two-night State Theatre stand brings a preview of next month’s 10th studio LP, the languid, Sam Doores-produced I Swam Here. Fellow firebrand folkie Olive Klug opens both shows. – Doug Freeman