I'm also looking for all the German words. In the late 1940s-early 50s I learned this partially auf Deutsch & part in English. Think I've found a source of sheet music. The bassoon:

"Das Bassoon kommt mit dem kuntrapunkt-lah laaahhh, la la la la la
la la--la la la"
(repeat)

Our version of the horn:

"Das Horn, Das Horn er klingt am morgen
(repeat)"

Shy can't we find more of the German or English verses??? We always hac such fun singing this...Tw