La donna è mobile comes from Giuseppe Verdi’s opera, Rigoletto which premiered in 1851. This particular song has been popular since it was released and is a showcase for the tenor in the opera.
Back then there were no TV’s, movies, Spotify’s, so if you wanted to watch a show you had to go see one live. Opera contained all of the elements people looked for like singing, dancing, costumes, elaborate stage sets, etc.