Who might stage Iris, Mascagni’s foremost opera, possibly (10)

I believe the answer is:

impresario

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'who might stage' is the definition.
I can't tell whether this definition defines the answer.

'iris mascagni's foremost opera possibly' is the wordplay.
'foremost' says to take the initial letters.
'possibly' indicates anagramming the letters.
The initial letter of 'mascagni' is 'm'.
'iris'+'m'+'opera'='irismopera'
'irismopera' anagrammed gives 'IMPRESARIO'.

Can you help me to learn more?

(Other definitions for impresario that I've seen before include "Theatrical manager" , "theatre director" , "Producer of performing arts" , "Theatrical organiser" , "opera manager" .)

I've seen this clue in The Independent.

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