In December 2005 she gave a "Secret Concert". Those concerts are organized by Greek music channel "MAD". They are called secret because only a few people can attend (usually after invitation instead of tickets) and the location of the event is kept secret until the very last moment. In that concert the artist is encouraged to sing songs that they don't get the chance to sing anywhere else before. among the songs that Helena sang were: Smooth operator, Crazy, Outside, Sweet dreams, That's the way it is, Don't speak, Like a prayer, Imagine and others. The concert was filmed and aired twice. The first time 25/12/05 on the Greek Channel MAD and the second on 26/12/05 in MEGA Channel. the show was a huge success and after many requests, the music Channel MAD, decided to air the concert again at the near future.