Oh, wow! I didn't know that memorial existed. But I am not surprised. Heinz Conrads was an icon of Austrian radio and TV for decades.
Interestingly, as a member of an Austrian family of musicians, I played the harp early on in my life and when I was about 8 years old (and again I think at age 10) I actually was invited to perfom on Heinz Conrad's show. Being live on TV was a scary experience, but he was the nicest and kindest guy you can imagine. A good memory!