Mats Norman and Dave Lampson reply to Pablo Gamba:

>>>... It wasl written following a Vivaldi's opera based in mexican
>>>emperor Moctezuma -?was it real?.
>>
>>I didn't know there was a "Montezuma" by Vivaldi, but by another
>>composer....
>
>Yes, Vivaldi did compose an opera with the title "Montezuma" (Motezuma),
>RV 723.  The German composer Carl Heinrich Graun (1704-1759), 19 years
>Vivaldi's junior, also composed an opera by that name. ...

Also, the American composer Roger Sessions.

Steve Schwartz