The cover, title and few opening minutes of New York filmmaker Curt Faudon's documentary featuring the Vienna Boys' Choir makes it look like we're going to follow the choir along the legendary trading path that linked Europe and the Orient centuries ago. But it doesn't take more than 15 minutes to realize that we're being taken for a different kind of ride.This isn't so much a documentary on a five-century-old European tradition mingling with other cultures as an elaborate promotional video for the legendary choir. These boys are happy, smart, enterprising and downright angelic as Faudon's flattering, high-definition lens follows them at work and at play. The 100 boys in four touring choirs are on the road constantly, so we get to see the briefest of glimpses of them in China, or Uzbekistan, or San Francisco, or Australia. We get a lot of time with the boys on their gloriously Baroque home turf.What we don't get is a single, complete piece of music, performed from end to end. Faudon teases plenty and delivers little. The Blu-ray disc offers spectacular visuals and audio, but no extras beyond a picture gallery. The "premium edition" DVD comes with a companion audio CD, so at least you get to hear the music from the Middle East and Asia that the boys now have in their repertoire.