Thanks for raising this issue.
This is a problem for us where a metadata provider credits an artist’s real name for composer and production credits and does not give us any information linking the two very different names to the same person. Some do it for accuracy (“it was like that in the CD booklet”) and some do it unaware that the two names represent the same person.
In the case of René Baumann, the goal is probably straightforward (provided we can make the link); he has a real name and a single performer alias, so we should use the recognizable performer alias if we can, but we also need to determine somehow that René Baumann isn’t a performer alias!
It gets really complicated for someone like Richard D. James. Better known as Aphex Twin, he has released material under all of the following pseudonyms / alter egos, including the full version of his real name:
The Dice Man
Phonic Boy on Dope
Richard David James
Should we associate Richard D. James (composer/producer credits) with his (limited) release alter ego Richard David James, which is the closest name match, or with Aphex Twin, his most widely recognizable alias? What about Richard D. James composer credits on a GAK single, or on a Power-Pill track on a Various Artists compilation?
What should we do in the case of an artist whose new alter ego is dwarfed by the old one, but then subsequently transcends it? Or has multiple alter egos of equal standing?
Sean Combs --> Puff Daddy, P. Diddy, and Diddy
Steven Demetre Georgiou --> Cat Stevens, Yusuf Islam, and Yusuf
Calvin Broadus --> Snoop Dogg, Snoop Lion (his distinct reggae alter ego), etc.
Dare I say it, what about Kanye West --> Ye?
Should we try and do something a bit more clever? Yes, and some of the enabling work has already been done. There is no magic bullet, but this is a current topic of discussion within the team and we’re in the process of figuring out a great solution here. We appreciate your patience!