Identifier of books switching focus, collecting European playwright (5)

I believe the answer is:

ibsen

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'playwright' is the definition.
(Henrik Ibsen, 1828-1906)

I cannot understand how the rest of the clue works.

(Other definitions for ibsen that I've seen before include "Playmaker" , ""Doll's House" dramatist" , "not one for 'All work and no play ...'" , "Author of The Master Builder, d. 1906" , "'Doll's House' playwright" .)

I've seen this clue in The Independent.

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