![](https://pix.avax.news/avaxnews/c6/15/000015c6_medium.jpeg)
Opera singers perform in the pool “AquAria PALAOA” during a rehearsal at the swimming pool Neukoelln on April 27, 2011 in Berlin, Germany. The premiere of the underwater opera AquAria PALAOA is on May 1st. (Photo by Andreas Rentz/Getty Images)
28 Apr 2011 09:00:00,post received
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