You are in the right way.

[fvbatistoni]

I have add some lines after line 112 to generate a TXT file with html code. After that, I open the html. Unfortunetly, the html is messed up, with excess of classes and it is impossible to convert to EPUB... But I believe you are in the right way. If you change my lines, you can generate a good and clean html file and with Calibre it will be possible to convert to EPUB.
# render page content = f'<style>{style}{font_style}</style>{html}' render_page.set_content(content) arquivo = open('musica.txt', 'r', encoding='utf-8') conteudo = arquivo.readlines() conteudo.append(content) arquivo = open('musica.txt', 'w', encoding='utf-8') arquivo.writelines(conteudo) arquivo.close()