Under the direction of Leon Botstein, the American Symphony Orchestra has become a dependable source of operatic rarities in concert. Here, Botstein leads a cast topped by Vale Rideout, Nicholas Pallesen, Carsten Wittmoser and Alison Buchanan in a Heinrich Marschner opera derived from John Polidori's novella The Vampyre—a product, incidentally, of the same stormy Villa Diodati klatch that induced Mary Shelley to produce Frankenstein.