Singer in musical, touring (4)

I believe the answer is:

alto

'singer' is the definition.
(alto is a kind of singer)

'in musical touring' is the wordplay.
'in' indicates a hidden word.
'ALTO' is hidden within 'musical touring'.

(Other definitions for alto that I've seen before include "Woman's singing voice" , "Male singer" , "The highest adult male singing voice" , "The highest adult male singing-voice" , "One who sings" .)

I've seen this clue in The Guardian and The Telegraph.

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