Met perhaps Oscar, a traveller heading west (5)

I believe the answer is:

opera

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'met perhaps oscar a traveller heading west' is the definition.
I can't judge whether this definition defines the answer.

'oscar a traveller heading west' is the wordplay.
'oscar' becomes 'O' (phonetic alphabet: alpha, bravo, charlie etc.).
'traveller' becomes 'rep' (travel company worker).
'heading west' says the letters should be written backwards.
'a'+'rep'='arep'
'arep' back-to-front is 'pera'.
'o'+'pera'='OPERA'

Can you help me to learn more?

(Other definitions for opera that I've seen before include "Music and drama production" , "Glyndebourne production" , "Eg, Carmen" , "Eg, La traviata" , "Aida, for example" .)

I've seen this clue in The Times.

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