From 21.00 h in "Ballhaus Rixdorf",  Kottbusser Damm 76, 10967 Berlin.  Tango-ball with live-music and dance-show.    Orchestra:      Performing:          In the registration-period from  Feb. 18th till Mai 10th 2002 tickets  can be ordered in advance.   When you see the red   beam in the calendar, the event   is already sold out.