Antonio Vivaldi and Joseph Haydn each excelled, each in his own way, as masters of musical moods. Their respective depictions of the seasons bear witness to this. At Grafenegg's Good Friday Concert, Fabio Biondi - the founder and director of the renowned period instrument ensemble Europa Galante - and the Tonkunstler Orchestra will show just how artfully these two composers understood how to express grief and suffering. It is unlikely the two ever met in person; but it has been said that as a boy Haydn sang in the Requiem mass at Vivaldi's funeral in St. Stephen's Cathedral in Vienna.