prov:value
| - Katia and Marielle are performing in the most prestigious venues and Festivals including the Vienna Musikverein, Hamburg Musikhalle, Munich Philharmonie, Carnegie Hall, Disney Hall, Royal Festival Hall, La Scala, Berlin Philharmonie, Blossom, Hollywood Bowl, Lucerne, Ludwisburg, ???Mostly Mozart??? (New York), The Proms (London), Ravinia, Ruhr, Tanglewood, Salzburg??? They scored a huge success be
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