The Vienna Philharmonic will perform the famous "Blue Danube" waltz, composed by Johann Strauss the Younger, in a special concert in the Austrian capital on May 31. The event will have a cosmic dimension, as the performance of this waltz will be transmitted to the Voyager 1 space probe, currently in interstellar space. The transmission will be made via the Deep Space Antenna telescope in Spain, operated by the European Space Agency (ESA). Norbert Kettner, director of the Vienna Tourist Office,