In Toronto urbanite is going round with artist (2,4)

I believe the answer is:

on tour

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'artist' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.

'in toronto urbanite is going round' is the wordplay.
'is going round' says the answer is hidden in the clue.
'ON TOUR' can be found hidden inside 'in toronto urbanite'.

'with' acts as a link.

Can you help me to learn more?

(Other definitions for on tour that I've seen before include "No rout (anag.)" , "Going from place to place" , "Doing a round of performances (of actor, band etc)" , "Travelling about" .)

I've seen this clue in The Irish Times.

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