As a stubbornly curious guitarist, Glenn Jones has proved he can handle a wide range of approaches, whether it’s John Fahey’s American Primitive school, Leo Kottke’s hyperdexterity or no-rules avant-rock. (For a real kick in the ass, get your hands on Abhayamudra, the live album Jones’ band Cul de Sac made while backing ex-Can lead singer Damo Suzuki on tour in 2003.) Fleeting lives up to its title in every way; it’s a quiet but haunting instrumental collection, recorded in a friend’s living room by the Delaware River almost entirely on acoustic guitar (three songs are tracked on five-string banjo), that somehow captures the unbearable brevity of being. Part of that mood resides in Jones’ otherworldly tunings—which he takes pains to reveal in the album notes, in case you’re feeling brave—as well as the subtle touch he brings to near-dissonant passages that convey just as much emotion as a human voice singing the blues. The standouts are the cascading “Flower Turned Inside-Out” and the folk fable-ish “Portrait of Basho as a Young Dragon,” but you owe it to yourself to experience the whole album in one sitting, preferably in a room warmed by the sun.