The joke this character is based on is so obvious that I have purposely avoided Googling the name "Lady Dada" since I came up with it. Not because I want to delude myself in thinking I'm the only one who came up with the idea (I'm sure I'm not) but because I didn't want to be influenced by other people's possible interpretations of the joke.
Her song is "Karawane" by Hugo Ball - one of the Dada movement's Alpha Team members.
READ FROM THE BEGINNING OF PART SIX