Confused impression of Britpop band (4)

I believe the answer is:

blur

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'confused impression' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

(Other definitions for blur that I've seen before include "This Brit-pop band is a bit hazy" , "Indistinct mark" , "Mist" , "Unfocused image" , "Out-of-focus image" .)

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