Band beginning to sing rubbish (6)

I believe the answer is:

stripe

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'band' is the definition.
(I know that band can be written as stripe)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for stripe that I've seen before include "Long band of a different colour" , "Sleeve badge showing military rank" , "Line of different colour - indicator of rank" , "Military mark of rank, chevron" , "Military sign of rank" .)

I've seen this clue in The Independent and The Times.

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