Arrange song for the people (3)

I believe the answer is:

lay

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'arrange' is the definition.
(I know that arrange is a more specific form of the action lay)

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for lay that I've seen before include "Song-ballad" , "Secular; set" , "Not ordained; song" , "Not a religious" , "Set (table)" .)

I've seen this clue in The Independent.

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