How does someone decide when to step out on his or her own? Andrew Joslyn can’t answer that for anyone else, nor would he pretend to. The 33-year-old classically trained violinist and genre bender’s personal journey toward self-realization has wended through myriad detours and thickets, as has anyone else’s. And it’s still in progress. But after decades of insulating himself under the auspices of various peers and collaborators Joslyn has arrived at an instinct to lay himself, and his music, more transparently bare.