Largest audience to a live audio play/ radio play

According to Official Guinness Records,

The largest audience to a live audio play was 15.211 people who attended a live recording of "Die drei ???" (The Three Investigators) performed by Oliver Rohrbeck, Jens Wawrczeck and Andreas Fröhlich (all Germany) at the Waldbühne in Berlin, Germany, on 21 August 2010.
The performance was recorded and then sold as audio file on USB sticks straight after the show. The audio plays of "The Three Investigators" were originally intended for children. They are very popular in Germany and have developed a cult following even among adults.

For a complete list of Unknown date records, please visit Unknown date Guinness Records in Germany.

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