We've seen classical music flash mobs in a Spanish vegetable market, in a Danish train station and on a Danish subway train, in a Chicago office building and in the lobby of a Boston cancer center. Now classical music flash mobs have struck Vienna. In the video above, instrumentalists and singers of the Vienna Volksoper weave an impromptu performance of signature numbers from Carl Orff's Carmina Burana into the stream of activity at Vienna's Westbahnhof (West Train Station). Watch for a chorister singing into his cell phone, and note the amused onlookers. So, central Ohio, would you like to see a classical music flash mob right here in your own backyard?