Singer runs out of money (4)

I believe the answer is:

bass

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'singer' is the definition.
(I know that bass is a type of singer)

I cannot understand how the rest of the clue works.

(Other definitions for bass that I've seen before include "Lowest adult male singing voice" , "Large fish - singer" , "bottom of sound?" , "Large percussion instrument" , "Booming percussion instrument" .)

I've seen this clue in The Telegraph.

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