Type of folk music popular in the UK in the 1950s (7)

I believe the answer is:

skiffle

(Other definitions for skiffle that I've seen before include "50's music" , "Music style using, eg, washboards" , "Style of music popularised Lonnie Donegan" , "1950s popular music genre" , "L. Donegan's music" .)

I've seen this clue in The Mirror.

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