Crossword Genius

Untrustworthy type reportedly calls off a solo passage (7)

Ross

I believe the answer is:

cadenza

'solo passage' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for cadenza that I've seen before include "Solo display passage" , "Virtuoso solo passage in a concerto" , "Virtuoso passage in concerto, etc" , "Virtuoso's solo" , "Elaborate passage for soloist" .)

I've seen this clue in The Guardian.
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