Adam Tinkle's solo performance features himself by an electrical guitar he plays (and, briefly, a saxophone he also plays) and the projected image of a kind archaic, helix-like invention that his grandfather concocted. That image occasionally dissolves into a stream, along which origami boats float. The primary narrative is recorded, against which Tinkle riffs on the guitar, sometimes with accompanying lyrics. This recording consists of audio-documentary clips from an interview by Tinkle of his grandfather, an inventor, and upbeat fellow who, as he aged, needed to move and remove the "junk" he accrued over the years. The interviews include the voices of the old man's daughters—Tinkle's aunts. Time passing means looking back on things we no longer know, or need to know. Tinkle is a stoic yet passionate performer, and his lovely performance is a kind of evocation to the essences of history on the verge of extinction. Fringe Central, 6585 Santa Monica Blvd., Hollywood. Sat., June 18, 11 p.m.; Wed., June 22, 3:30 p.m.; Thurs., June 23, 5 p.m. hollywoodfringe.org/projects/401.