The first amazing thing about Marnie Stern is the sheer amount of sound she puts out. Armed with a guitar, a few effects pedals, some vocal pitch-shifting, and helluva lot of finger-tapping talent — plus a skilled bassist and drummer — Stern's music rains sonic hellfire down on listeners, with solos that sound like a hail of napalm and vocals that conjure images of ten thousand angry fairies all shouting at once. The second amazing thing about Marnie Stern is how well the New York songwriter-shredder reproduces the highly composed onslaught of her albums onstage, given the aforementioned minimal setup. But since Stern's latest collection, The Chronicles of Marnia, is arguably her best — pairing the usual thrilling chaos with a little introspection for the first time — there are really an abundance of reasons to catch her S.F. show this week.