Websites like Litrres (Литрес) or MyBook often have these titles available for legal purchase and download in formats like PDF or EPUB.
Descriptions of orchestral families (strings, woodwinds, brass, percussion) and modern electronic instruments. vse o muzyke kniga skachat
Depending on which specific edition or author you are looking for, Common Books Titled "Vse o Muzyke" Websites like Litrres (Литрес) or MyBook often have