Pacini's interpretations are highly unorthodox and today would be considered bad taste, but I can't get enough of them. Here she is singing Sempre libera from La Traviata. This recording was made in Milan for Fonotipia on 5 May 1905.
As a commenter pointed out on another of my Pacini uploads, she later became the first lady of Argentina.
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<bdo lang="en" dir="ltr"><a href="//commons.wikimedia.org/wiki/Commons:YouTube_files" title="Commons:YouTube files">YouTube</a>: <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=7o45Vhn1snY"><bdi lang="">Regina Pacini sings Sempre libera from La Traviata 1905 Fonotipia</bdi></a> – View/save archived versions on <a rel="nofollow" class="external text" href="https://web.archive.org/web/*/https://www.youtube.com/watch?v=7o45Vhn1snY">archive.org</a> and <a rel="nofollow" class="external text" href="https://archive.today/https://www.youtube.com/watch?v=7o45Vhn1snY">archive.today</a></bdo>