I didn't know anything about this anime until Two Set Violin made a Reaction Video. The Reaction on Eddy's face when he was shocked to see Liszt as a Woman was Priceless LOL 😂. (I was shocked too LOL 😂)
Late but I think it's because Lizst was the embodiment of beauty at the time. Many people saw him as a symbol of love and beauty and some saw him as a woman in a man's body.