Am Anfang War Das A (It Started with A) is the 25th anniversary special of Sesamstrasse, the German co-production of Sesame Street, from 1998.

The special stars actor Piet Klocke as a rather confused professor, explaining the theories behind Sesamstrasse with the help of archive material. Meanwhile, all the Strasse-inhabitants including Samson, Tiffy, Finchen, Buh, Rumpel, and Bettina #2 get ready for the party.

As a surprise finale, singer Blümchen performs "Sesam Jam (Der, Die, Das)," with the cast.

Rumpel, Samson and Buh

Piet Klocke in Rumpel's barrell

Rumpel, Jivana and the kids