Famous Piano Piece

[Scoota]

Does anyone know what famous piano piece is used as the into in "Hier Kommt Alex" from Die Toten Hosen's Unplugged album?

Please take a look:
http://www.amazon.de/Nur-Besuch-Unplugged-...78250600&sr=8-1

It's number 6. Hier kommt Alex. Just click 'Reinhören'

Thanks!