This video is about a very talented boy in 2005! At the time, he was only 14 years old. His name is Robin Schlotz. The following description is quoted from 52sport6469's comment "The aria was NOT performed in an official concert, but on a TKC Eltern-Tag (a kind of internal exhibition entertainment for the boys´ families). Robin was NOT forced to do it, but came up HIMSELF with the suggestion to try to sing it, as a sort of extra item, as he more or less in secret had learned it by himself, and wanted to see if he could do it in public. According to people who were present that July day of 2005 it was a great and pleasant surprise to everybody, even boss GSG himself! "