It is currently not possible to get a feature from pre-NGS: get a standardized name for (split) collaborations.

E.g. what we want is this:

• "Ambros, Tauchen, Prokopetz" – (standardized) --> "Ambros, Tauchen, Prokopetz" (stays the same)
  (this doesn't work at the moment, it is standardized to "Wolfgang Ambros, Manfred Tauchen, Joesi Prokopetz")

• "deadmau5 + Kaskade" and "deadmau5 & Kaskade" – (standardized) --> "deadmau5 & Kaskade" (just an example, the most used one = often pre-NGS collaboration artist should be used)
  (this doesn't work at the moment)

• "Rihanna feat. JAY-Z" – (standardized) --> "Rihanna feat. Jay-Z"
  (this is already working)

it is not possible to do all these cases at the same time right now. Ideas how to do this cleanly are very welcome!