In the case of artists (and most Places), this is correct. I have not yet run across a case of an artist who changes his/her/their name after leaving the music industry (I have seen some nicknames dropped for that reason, though that is a separate matter). In the hypothetical case of an artist who retires from music and changes his/her/their name, I would stop at the last name that artist used professionally, primarily out of respect for that artist's privacy.
It's only used for church functions. That YouTube video you posted in edit #40246593 shows a song being performed, but it appears to just be music played as part of a larger church service. If we were to count performances like that as Events, we'd have to add every church on the planet and all the services they hold.