The duet with Cassandra Steen now has a sort of official video. It’s simply Tiziano and Cassandra singing the song in a studio setting. I can assure you Tiziano is not short, it’s Cassandra who is tall! Check it out here.
They will also sing the song together on Monday (the 28th), on the German show Fernsehgarten, which airs on ZDF from 11:30 to 13:40. Fingers crossed that they will sing live!