11.   Much of its enduring appeal has to do with its simplicity.

12.   Mike Shalett, the chief operating officer of Soundscan, the sales tracking service, scoffed at the notion that vinyl exerted an enduring appeal.

13.   Others note the enduring appeal of a classic.

14.   Perhaps the contradictions and lack of a decisive conclusion are part of its enduring appeal.

15.   There are other reasons for its enduring appeal.

16.   To other poets, the enduring poetic appeal of Brooklyn is a plainly, powerfully physical phenomenon.

17.   Witness the enduring appeal of Prince Hamlet, Jake Barnes and James Dean on the stage, page and screen.

18.   Yet this latest resurgence of a Berlin classic was scarcely needed to demonstrate the enduring appeal of his songs.

19.   But while its enduring appeal is clear, its exact origins are not.

20.   Despite its enduring appeal, its origins are obscure.