Tragic opera has Indian appearing regularly (4)

I believe the answer is:

aida

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'tragic opera' is the definition.
'Aida' can be an answer for 'opera' (Aida is an opera by Giuseppe Verdi). I am not sure about the 'tragic' bit.

'has indian appearing regularly' is the wordplay.
'appearing regularly' indicates alternate letters.
'has'+'indian'='hasindian'
The alternate letters of 'hasindian' are 'AIDA'.

Can you help me to learn more?

(Other definitions for aida that I've seen before include "she dies entombed" , "work of grand proportions" , "Egyptian opera by 11 Down" , "Verdi's slave girl" , "Verdi's opera set in ancient Egypt" .)

I've seen this clue in The Times.

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