Leave in anger, travelling initially to opera (9)

I believe the answer is:

rigoletto

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

'leave in anger travelling initially' is the wordplay.
'leave' becomes 'go'.
'in' indicates putting letters inside.
'anger' becomes 'rile' (I've seen this in other clues).
'travelling initially' becomes 'tto' (I am not sure about this - if you are sure you should believe this answer much more).
'go' inserted into 'rile' is 'rigole'.
'rigole'+'tto'='RIGOLETTO'

'to' is the link.

Can you help me to learn more?

(Other definitions for rigoletto that I've seen before include "Opera by Verdi" , "titled man" , "noted work" , "court favourite" , "Verdi's hunchback jester" .)

I've seen this clue in The Telegraph.

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