Don't worry, when you create another entry by the same name, you will not be writing over what was already there. The system has a way of treating the titles as incidental text. The only thing is that the link for the article, the URL, will probably have a dash after your title, and then some number. So it will look like this:
thepropagandasite.com/artist/[the-name-of-the-artist]-[some number]
instead of the regular:
thepropagandasite.com/artist/[the-name-of-the-artist]