Hot singer's timeless gold disc (4)

I believe the answer is:

halo

'gold disc' is the definition.

I can't explain the remainder of the clue.

(Other definitions for halo that I've seen before include "Glittering aura" , "Circle of light round the sun or moon" , "Saintly ring" , "Ring of saintliness" , "Disc of light" .)

I've seen this clue in The Guardian.

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