0
Operation Opera happened in 1981.
No, the O is a short O (ah) sound, as in operation or opportunity.
-Opera Tickets
-Operation Game
-oven
-ostrich
-oreo's
Opera Seria and Opera Buffa
There are numerous kinds, but the basic types are - Grand Opera Comic Opera Serious Opera Opera Semiseria Opera Cornique Opera Verismo Singspiel Operetta Chinese opera