SavoyTruffle said:
What would his legacy on music be?
Mozart was a genius composer. He would probably write down several other classic masterpieces.
One immediate thing that would be sure is that he would finish his Requiem since he died before having finished it (which is quite ironic : dying while writing a Requiem...). The unfinished Mozart's Requiem is one of his beautifulest pieces, I can't imagine how better it would be if finished.
By the way, didn't he died around 1790? If he lived longer, wouldn't he have to face the events of the French Revolution, like Beethoven did?
If so, it would be interesting to see how Mozart would act.