Singer Woody gets naughtier, leading couple stripping off (7)

I believe the answer is:

guthrie

'singer woody' is the definition.
(US folk musician Woody Guthrie)

I don't understand the remainder of the clue.

(Other definitions for guthrie that I've seen before include "Woody -, US folk singer" , "folk-singer" , "guitarist Woody" .)

I've seen this clue in The Guardian.

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