Time musical is current (5)

I believe the answer is:

trent

'is current' is the definition.
(River Trent)

'time musical' is the wordplay.
'time' becomes 't'.
'musical' becomes 'rent' (Rent is an example).
't'+'rent'='TRENT'

(Other definitions for trent that I've seen before include "Chief river of the Midlands" , "River at Stoke and Burton" , "Crossword frame" , "Little Nell family; Eng. river" , "River flowing through Nottingham" .)

I've seen this clue in The Guardian.

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