Domenico Guardasoni
He also presented operas by Mozart , such as the 1787 première of "Don Giovanni" , and it was Guardasoni who commissioned "La clemenza di Tito" in 1791 for the Italian opera and National Theatre in Prague , of which he was director . 
<triplet> Mozart <subj> Don Giovanni <obj> notable work <triplet> Don Giovanni <subj> Mozart <obj> composer <subj> 1787 <obj> inception <subj> Prague <obj> location of first performance <triplet> La clemenza di Tito <subj> Mozart <obj> composer