Deletion of Thomas Betzwieser

Comment: I added one published review each of two books by him to the article. That's only enough for a weak case for , but I think the case for #C3 is strong
Stance: keep
Cited policy: Wikipedia:Notability (WP:AUTHOR||WP:PROF)

Comment: it's not a professional organisation, the Akademie der Wissenschaften und der Literatur falls under  #3, "The person is or has been an elected member of a highly selective and prestigious scholarly society or association". This academy has 3 classes, and up to 100 members only in each class. That is highly selective
Stance: keep
Cited policy: Wikipedia:Notability (WP:NACADEMIC)

Comment: meets  item 3. No idea whether he is notable as a musician. (de-prodder
Stance: keep
Cited policy: Wikipedia:Notability (WP:NPROF)