Talk:Musical Association Relationship Class
It's not possible to represent multiple legal names in the system (for example maiden names, Walter/Wendy Carlos), except by the rather inaccurate method of calling later legal names "performance names" of the birth name. This issue has been discussed in detail in the LinkingDifferentArtistNamesDiscussion which has finally led to a proposal on LinkingDifferentArtistNames.
There's also big overlap with the "normal" aliases we had before. Tupac Shakur is an interesting case.