Dave Taylor with the Post-Classical Ensemble at the Kennedy Center in Washington DC on April 24th plays "Der Doppelgänger" by Franz Schubert, arranged by Dave Taylor
look on imslp.org, look for Schubert's Schwanengesang (the set of lieder) and you will find Der Doppelganger in it. and it's free. and you can play around with it, just like David Taylor did.