I am from Gemany and discovered Dasha by pure chance some weeks ago while searching on RU-vid for a song from famous Czech singer Karel Gott, where Dasha was background singer and sometimes also duet partner for more than 20 years. I was also surprised that she is not more known, but after I read something about her, I conclude that it is mainly because of her own personality, she prefers to somehow stay in the background and sees some disadvantages in being too famous, like being followed too much by the press.