On 30. November 2019, the Slovenian tenor will make his roll debut as Jim Mahoney in "Aufstieg und Fall der Stadt Mahagonny" at the Landesbühnen Sachsen.

On 3. October 2019, he will make his roll debut as Florestan in "Fidelio" at the Landesbühnen Sachsen.

In the 2019/2020 season Aljaž Vesel will make his debut at the Heidelberg Theatre as the 1. Geharnischter Mann in "The Magic Flute"